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TAG Heuer today expands its Aquaracer Professional 300 collection with three new watches. Two models with blue and black dials, first seen in April as steel bracelet models when TAG Heuer upgraded the deep-diving collection, are now offered with matching rubber strap options.

A third debut echoes a favorite bright-dialed TAG Heuer dive watch from the past.

TAG Heuer re-introduces an old favorite with Aquaracer Professional 300 Night Diver.

Return of the Night Diver

TAG Heuer’s highlight fall 2021 Aquaracer Professional 300 debut is the all-black, lume-dialed Aquaracer Professional 300 Night Diver. The watch recalls the TAG Heuer “Night Diver” first seen in the mid-1980s and re-introduced in numerous guises in the years since, most recently in 2018.

The Night Diver’s standout feature, then and today, is its fully luminescent dial, which TAG Heuer coats in green SuperLuminova. This is truly non-subtle lume, which may be too bright for some desk divers, but for others hits home.

TAG Heuer seemingly overfills the watch’s minute and central seconds with blue lume to clearly contrast with the green dial. That bright green color also appears on the hour hand and four primary hour markers. And critically, TAG Heuer fills the triangle at the top of the unidirectional rotating bezel with blue lume to match the blue of the minute and central seconds hands.

To emphasize the ‘night’ in the watch’s nickname, TAG Heuer coats the watch’s 43mm stainless steel case, bezel, crown, caseback and clasp with matte black diamond-like carbon. The bezel insert is black ceramic.

TAG Heuer’s ETA-based (or Sellita-based) Caliber 5 automatic movement powers all references in the new Aquaracer Professional 300 collection.

TAG Heuer fits the Night Diver with a black rubber strap
 with a black DLC steel folding clasp with double safety push buttons with fine adjustment system.

Full collection

You might recall that earlier this year TAG Heuer revamped its Aquaracer collection, displaying models with a more refined twelve-sided bezel, shorter lugs, slightly wider hour hands and more prominent horizontal engraved dial lines. The three new models debuting today expand the new Aquaracer collection to eleven references.

All three new Aquaracer models feature a unidirectional rotating bezel, a screw-down crown, are water resistance to 300 meters, feature a sapphire crystal and a double safety clasp. And they all have solid casebacks stamped with a diving suit sporting a twelve-sided faceplate.

Prices: $3,350 (Night Diver) and $2,700 (Aquaracer with blue or black dial with new rubber strap).

The new Aquaracer Professional 300 collection now includes blue or black-dialed models with matching straps. These models debuted in April with steel bracelets only.

 

 

The new Franck Muller Skafander integrates a diving theme with a tonneau-shaped case – a combination rarely seen among marine-focused watch designs. Because divers require a unidirectional rotating bezel to assess correct dive time, watches for divers typically utilize a round case built with a round bezel.

Two examples of the new Franck Muller Skafander.

Here, Franck Muller has devised a functional round diver’s bezel, but has placed it inside the Skafander’s large tonneau case, a shape deeply familiar to aficionados of this iconoclastic independent watchmaker. Once set and locked, the Skafander’s dive time is secured with a clearly labeled lock, which insures that the bezel won’t be accidently altered.

While not an officially certified dive watch, the Skafander will retain its water resistance to 100 meters, which allows wearers full, worry-free use while at the beach, boating – or in the pool.

Franck Muller offers the Skafander in a range of case metals, including titanium, steel and rose gold, all with a semi-skeletonized dial that allows a view into the automatic movement below.

Skippers might prefer the highly visible titanium-cased models with blue or yellow accents, or even the blue-accented watch cased in steel. We suspect the boat’s owner, however, might opt to the ritzier rose gold model.  

Price:  CHF 14,800 (about $16,100, for titanium models only).

 

Specifications: Franck Muller Skafander (titanium case edition)

Case: 46mm x 57mm x 15.60mm titanium with black PVD treatment. Water resistant to 100 meters.

Movement: Automatic, offering 42 hours power reserve.

Dial: Unidirectional internal rotating bezel indicating the diving time. Half-openwork movement in the center.

Strap: Blue rubber. More colors available with steel and gold models.

 

Ulysse Nardin updates its already extensive dive watch collection with three dive models that add rose gold to existing favorites. Two of the updates include a new rose gold bezel atop a steel or a titanium case.  A third debut includes diamonds set in a rose gold bezel atop a 39mm rose gold case.

Diver 42mm Grey and Rose Gold

The new Ulysse Nardin Diver 42mm Grey and Rose Gold.

This latest 42mm steel-cased PVD-satin-finished ‘shark grey’ dive model boasts a 42mm case with nicely contrasting rose gold and gray rubberized, unidirectional rotating, concave bezel.  

Beneath the clearly domed sapphire crystal Ulysse Nardin offers a dial with a contemporary sandblasted finish. Ulysse Nardin has engraved its logo on the solid grey PVD back.

Inside you’ll find a Sellita-based automatic UN-816 movement (outfitted with a silicon escapement wheel and anchor) protected down to 300 meters under water. Finally, Ulysse Nardin secures the watch’s gray alligator strap with a stainless steel grey PVD buckle. Price: $10,400.

The new Ulysse Nardin Diver Chronometer 44mm.

Diver Chronometer 44mm

With a larger (44mm) case, the Ulysse Nardin Diver Chronometer 44mm, with a classic ocean blue dial and blue PVD-coated titanium case, offers a more feature-filled option for nautical adventurers.

Its rose gold unidirectional bezel is appropriately easy to read with gold markers and luminous 0 at the top to mark dive time. The dial, itself well lit with SuperLuminova ands and markers, displays a power reserve indicator at 12 o’clock and a substantial small seconds hand in a subdial at 6 o’clock.

Inside, Ulysse Nardin fits its own Caliber UN-118, which boasts a Diamonsil (a diamond-silicon alloy) escapement wheel and anchor and a silicon balance spring, much of which is visible through a see-through sapphire caseback.

And despite the clear back, Ulysse Nardin assures us that the Ulysse Nardin Diver Chronometer 44mm, like the full Diver Chronometer 44mm collection, is built to withstand up to 300 meters of water pressure. Price: $13,300.

The Ulysse Nardin Caliber UN-118 Manufacture movement.

Lady Diver Rose Gold

Set with forty diamonds, this glittering 39mm watch may be a fashion-forward mother-of-pearl dial watch, but inside it’s all business.

The Ulysse Nardin Lady Diver Rose Gold, on an alligator strap.

Within the full rose gold case Ulysse Nardin fits its automatic UN-816 movement, the same one powering the Diver 42mm Grey and Rose Gold described above. That sharp-looking dial glows with eleven diamonds; the white alligator strap is held in place by a rose gold buckle. If you’re sporty, opt for the model with the white rubber strap.  Price: $25,800.

The Ulysse Nardin Lady Diver Rose Gold, here on a rubber strap.

If diving with the eye-catching Reservoir Limited-Edition Hydrosphere Bronze on your wrist isn’t enough of an inducement to buying the technically unique dive watch, perhaps you’ll be enticed by an invitation to dive wearing it alongside renowned diver and photographer Greg Lecoeur.

The Reservoir Hydrosphere Greg Lecoeur Limited Edition.

The new inducement means each buyer of the Hydrosphere Greg Lecoeur Limited Edition will be offered a half-day of diving with Lecoeur in the Port-Cros national park in Hyères, France, during a session in September (not including insurance, accommodation and transportation).

Lecoeur is also a supporter of coral protection, and funds from the sale of each special edition Hydrosphere Bronze will be donated to the replanting of a coral through the Coral Gardeners Association.

Reservoir and Lecoeur have teamed to design and produce the fifty-piece limited edition of the bronze-cased watch. Lecoeur chose a blue sunray dial for the limited edition, and each watch will be delivered with a package of photographs from one of his exploration notebooks, all placed into in a handy waterproof carrying case.

The new fifty-piece limited edition series also features a Greg Lecoeur engraving on the back and his name on the dial.  

Reservoir’s Hydrosphere stands alone as the only single-hand functional dive watch we’ve seen. And while we’ve seen bronze encase more than a few nautically themed watches in recent years, the Hydrosphere’s unusual retrograde minute display and jumping hour module set it apart from traditional dive models while still upholding a diver’s need for highly legible dive timing, unidirectional bezel, helium valve and strong water resistance (here rated to 250 meters).  Price: $4,850.

 

Specifications: Reservoir Hydrosphere Greg Lecoeur Edition (limited edition of fifty pieces)

Case: 45mm bronze with satin finish, unidirectional ceramic rotating bezel with double scale for reading the time at different diving depths before and after the retrograde minute hand’s return, helium valve, stainless steel screwed back, screw-down crown, water resistant to 250 meters.

Dial: Blue with sundial finish, white index, magnifier on the jumping-hour window.
Movement: Automatic with patented proprietary 124-piece module on ETA 2824-2 caliber, with retrograde minutes, jumping hour, power reserve of 37 hours, power reserve indicator.

Strap: Black rubber screwed onto the body, additional blue NATO strap provided, mounted on bronze stirrups.

Price: $4,850.

    

 

By Gary Girdvainis

Early diving watches were purpose-built instruments designed to tackle the rigors of our underwater environments. In the earliest examples the focus really was on function. The ability to withstand the static and dynamic pressures of submersion was joined by the need to register time under water at a glance as well as being able to tell that the watch was in-fact running.

These basic needs drove the form-follows-function groundwork for all diver types now homologated under the ISO 6425 standard.

During the early days of hard hat and SCUBA diving, these designs first came to life as underwater tools that have now (d)evolved to become themselves an iconic look that both SCUBA and desk divers alike have come to appreciate.

The new Ulysse Nardin Lemon Shark Diver.

In the case of the Ulysse Nardin Lemon Shark Diver series you can be assured that the sensual interaction with the watch confirms it is in-fact a well-built timepiece comfortable in or out of the water. And while some brands take the basic type into stranger waters with extraneous bells, whistles, and shocking palettes of color, the Ulysse Nardin Lemon Shark watch is, like the Lemon Shark itself, a subtler example of evolution.

The Ulysse Nardin Lemon Shark won’t jump off your wrist and demand to be seen like the “porthole” watches from the early days of our universe any more than a Lemon Shark will jump fifteen feet out of the water to grab a seal like its bigger cousin, the Great White.  

The details

Playing with a luxury watch like the Ulysse Nardin Lemon Shark is always a multi-faceted experience. The click of a unidirectional rotating bezel excites both aural and physical feedback and can quickly indicate the nature of the watch under it. Connoisseurs look for a smooth action paired with a subtle “snicking” of 120 (or 60) clicks with little to no backlash – as opposed to the sandy crunch of lesser watches that have rotating bezels that sound and feel like you’re working a peppermill over your Caesar salad.

Details like the easy-grip concave bezel (protecting the crystal), machined crown (easy to manipulate), and recycled netting strap (clean conscience) don’t necessarily leap out at you by themselves, but they combine to form a complete wristwatch that is well built, tough as nails, and easy on the eyes.

Even the touches of yellow are not overdone. Ulysse Nardin could have easily decided to place an all-yellow dial with black accents on the Lemon Shark – and few would argue that is not a great look, but that bold look has been done time and again. Credit to the brand for taking a more sober and refined approach to this 42mm black DLC beauty.

Under the recessed and slightly domed sapphire crystal is a matte-finish dial, wide stick-type hands, and applied markers with touches of “lemon” yellow and superior lume on the hands and markers.

Rated to 300 meters without using the superfluous helium release valve, the Lemon Shark is powered by the automatic winding mechanical caliber UN 816. The 816 will hum away at 28,800 bph for 42 hours when fully wound and benefits from Ulysse Nardin’s long history using silicium components in the escapement for both accuracy and longevity. Limited to 300 pieces, each Lemon Shark Diver features three sharks on the oil-pressed case back and retails for $7,300.

The back of the watch offers a Lemon Shark engraving.

Beyond the watches, Ulysse Nardin has partnered with Chris Fischer and the Ocearch research team as well as the Florida International University to sponsor research and conservation of lemon sharks as well as other marine species and also supports the Aquarius underwater research habitat for humans located 63 feet under water off of Islamorada in the Florida Keys.

Champion freediver and photographer Fred Buyle, with his Ulysse Nardin Lemon Shark Diver.

Specifications: Ulysse Nardin Lemon Shark Diver

(Reference: 8163-175LE/92-LEMONSHARK, 300-piece limited edition)

Movement: Automatic calibre UN-816, powering hours, minutes, seconds and date. Power reserve of 42 hours. 

Case: 
42mm steel, black DLC, inverted concave unidirectional rotating bezel, back with 
Lemon shark engraving, 300-meters water resistance..

Dial: Sand-blasted black with yellow accents.

Strap: Black R-STRAP, scratch closing, metal component in titanium is 100% recycled from the ocean from fishing nets
, collected in France.

Price: $7,300.

 

Among Seiko’s wide-ranging 2021 debuts, two new Prospex models stand out for near-perfect fidelity to the original Seiko watches that inspired their re-interpretation. One, the Seiko Prospex Alpinist, revisits a Seiko sport model from 1959, while a second, the new Seiko Prospex Naomi Uemura 80th Anniversary Limited Edition, revisits a historic dive watch Seiko made in 1970.

What makes both these debuts even more vital for Seiko collectors, and sports watch enthusiasts in general, are the updated collections based on these historic designs.

First, let’s take a look at the diver’s watch.

The Seiko Prospex Naomi Uemura 80th Anniversary Limited Edition watch, showing blue silicone strap.

Seiko Prospex Naomi Uemura 80th Anniversary Limited Edition

As worn by Japanese adventurer Naomi Uemura in the mid-1970s when he completed a 12,500-kilometer solo dog-sled run from Greenland to Alaska, a 1970 Seiko dive watch offered both reliability and protection. The watch was also notable for its unusual asymmetrical extension that protected the crown at the four o’clock position.

The curved extension of the case fully protects the screw-down crown.

Revisiting that 1970 design, Seiko in 2021 offers two new 44mm steel models. One (Reference SLA049) is a limited edition of 1,200 watches that echo the case’s original shape, high-visibility and three-hand dial, but now offer a special ‘mountain-pattern’ blue dial and blue bezel, said to recall the “blue tones of the earth’s upper atmospheric layers.” 

The original Seiko 1970 divers watch.

Seiko of course has modernized the tribute watch in several ways, primarily with the updated movement. Inside you’ll find Seiko’s dive-centric Caliber 8L35, made at the Seiko Shizukuishi Watch Studio in northern Japan.

The dial is also extra luminous, with all hands and all hour markers coated generously with Lumibrite. Seiko has also coated the case with a protective, anti-scratch layer, and has placed an anti-reflective coating on the dual-curved sapphire crystal.

The caseback is engraved with Uemura’s name and the watch’s number.

Finally, Seiko has increased the watch’s water resistance, now rated to 200 meters. For this limited model, Seiko includes a blue silicone strap that has the same train-track pattern as the original model.

Seiko Prospex 1970 Diver’s Modern Re-interpretation.

In addition to the blue-dialed limited edition that commemorates the 80th anniversary of Naomi Uemura’s birth, Seiko adds a gray dialed version to the Prospex collection. The watch shares the same textured pattern dial as the limited edition but is in a charcoal gray color that is similar to the 1970 original. It shares the same case design, features and specifications as the commemorative watch and will also be available at the Seiko Boutiques and selected retail partners worldwide in July 2021.

Prices: $3,100 (Ref. SLA049–limited to 1,200 pieces), $2,900 (With gray dial, Ref. SLA051)
 

The Alpinist

Seiko introduced its first watch made for mountain climbers in 1959. Called the Seiko Laurel Alpinist, it marked the start of Seiko’s march into the much broader sports watch market. Seiko followed that debut model with a series of watches specifically tailored for sports, including stopwatches and diver’s watches.

The original Seiko Laurel Alpinist, circa 1959.

For 2021 Seiko revives that debut 1959 design with two odes to the original. One, the Seiko Prospex 1959 Alpinist Re-creation, is a 36.6mm limited edition that retains the original’s dial markings and its sporty leather cuff. A second model, the Seiko Prospex 1959 Alpinist Modern Re-interpretation, is slightly larger, at 38mm, is fitted with a different movement and is offered on steel bracelet (and two dial options) and on a leather strap.

The new Seiko Prospex 1959 Alpinist Re-creation (Reference SJE085), a limited edition of 1,200.

Seiko Prospex 1959 Alpinist Re-creation

The re-creation brings back the black dial and large markers found on the original, but now adds a date window and stronger water resistant (to 100 meters). In addition, its box-shaped sapphire crystal is now treated with an anti-reflective coating on the inner surface. Finally, the movement is updated with Seiko’s thin automatic Caliber 6L35, which has a power reserve of 45 hours. Despite the addition of a date and the new automatic caliber, the case is just 1.0mm thicker (11.1mm) than the original model. And of course, Seiko has faithfully reproduced the leather strap and cuff, using the same jagged stitch design as its predecessor.

Seiko’s slimline Caliber 6L35 has a power reserve of 45 hours.

The re-creation will be available as a limited edition of 1,959 at the Seiko Boutiques and selected retail partners worldwide in August. Price: $2,900.

Prospex 1959 Alpinist Modern Re-interpretation (below)

One of two steel-bracelet models in the new Seiko Prospex 1959 Alpinist Modern Re-interpretation collection (Reference SPB243).

The three other new watches that pay homage to the 1959 Alpinist sport a more contemporary dial treatment and offer a choice among two steel bracelet models and one attached to a leather strap. This collection of three models is one of Seiko’s best values among all its 2021 debuts.

The green-dialed Seiko Prospex 1959 Alpinist Modern Re-interpretation collection comes on a leather strap.

Their slightly larger (38mm) polished cases are notably more modern than the Re-creation, and the Caliber 6R35 offers a stronger power reserve, at 70 hours. In addition, the water resistance is to 200 meters, twice the rating of the Re-creation. Two watches (cream-colored dial and black dial) are offered on stainless steel bracelets while the green dial version comes with a leather strap.

The new Seiko Prospex 1959 Alpinist Modern Re-interpretation, Reference SPB241.

All three of these Prospex 1959 Alpinist Modern Re-interpretation watches will be available at the Seiko Boutiques and selected retail partners worldwide in August. Prices: $750 and $725 (leather strap).

As Omega prepares for its role as official timekeeper for the upcoming 36th America’s Cup, the watchmaker launches the Seamaster Diver 300M America’s Cup Chronograph, a 44mm steel watch with a boat-race (regatta) countdown indicator.

The new Omega Seamaster Diver 300M America’s Cup Chronograph.

The new 44mm chronograph, based on a 2019 Omega Seamaster Diver, has a blue ceramic dial with the collection’s familiar laser-engraved wave-pattern and white enamel diving scale on the bezel. Less familiar is the regatta countdown indicator ring in red anodized aluminum.

The indicator’s red anodized aluminum minute hand, with a shape inspired by a boat hull, provides the countdown indication, supplemented by a rhodium-plated small seconds hand at the 9 o’clock position. Chronograph hours are visible in a window within the countdown subdial.

Cup tributes

Omega maintains the watch’s America’s Cup distinction with a central seconds chronograph hand, also in red anodized aluminum, that features an America’s Cup icon in red on the counterweight. More Cup tributes are visible on the back of the watch, including “36th America’s Cup” and “Auckland 2021,” both spelled in blue lacquer.

Also seaworthy, even beyond the already strong Seamaster Diver specs, is a helium escape valve and soft-touch red and blue rubber pushers, designed to work efficiently when wet. That efficiency is backed with a new chronograph lock-system that secures the chronograph functions when needed, presumably during a race at sea.

The new watch continues Omega’s longstanding relationship with the America’s Cup, which the brand also officially timed in 2000 and 2003. This newest watch is the second Omega has launched in support of the 36th America’s Cup, which takes place in New Zealand starting March 6. Last year Omega released the Seamaster Planet Ocean America’s Cup Edition.

The Omega Seamaster Planet Ocean America’s Cup Edition, released in 2020.

New Quick Change 

Omega offers the new Seamaster Diver 300M America’s Cup Chronograph with a metal bracelet and an additional rubber strap, both equipped with Omega’s brand new Quick Change system. The watchmaker says with the system, the owner can quickly “switch easily between the bracelet and the strap without having to use tools.”

Omega says its new Quick Change feature makes switching bracelets simpler.

Inside Omega fits its excellent Co-Axial Master Chronometer Caliber 9900, an automatic chronograph movement with column wheel and Co-Axial escapement. The movement is approved by METAS, resistant to magnetic fields reaching 15,000 gauss and features a silicon balance-spring and sixty hours of power reserve.

Visible through the caseback, the Co-Axial Master Chronometer Calibre 9900 is is resistant to magnetic fields reaching 15,000 gauss and features a silicon balance-spring.

Price: $10,700.

Panerai underscores its deep connection with divers of all types this week as it introduces the Luminor Marina 44mm − Guillaume Néry Edition (PAM01122).

Inspired by free diver and brand ambassador Guillaume Néry, Panerai has outfitted the new dive watch with a 44mm titanium case produced using Direct Metal Laser Sintering technology, which shapes titanium using a 3D printing process.

The new Panerai Luminor Marina 44mm − Guillaume Néry Edition (PAM01122),

Referencing Néry’s deep-dives, Panerai is also adding sporty touches such as a rubberized coating on the bezel, crown and bridge lever, a convex crystal and a dial with an eye-catching dégradé effect that Panerai says emulates “the shades produced as sunlight filters through the depths of the sea.”

Water resistant to 300 meters, the Luminor Marina 44mm − Guillaume Néry Edition is powered by Panerai’s own Caliber P.9010, a fairly thin automatic movement equipped with two barrels for a three-day power reserve. Panerai built a quick-change feature into this movement that allows the wearer to easily adjust the time and date with in one-hour increments, with the hour hand connected to the date indicator.

 

In addition, Panerai has equipped the watch with an especially sporty strap made from black recycled PET material with white stitching and a trapezoidal pin buckle.

Panerai is also enhancing the package of the boutique-only watch with its first white rubber strap emblazoned with ‘Officine Panerai.’ In each gift box buyers will find a screwdriver that will assist the owner when removing the buckle to swap straps.

The caseback includes an engraving depicting the silhouette of the freediver and Panerai Ambassador Guillaume Néry.

Panerai will make the new watch available in its own boutiques as a limited edition of seventy, each of which will be covered by a new seventy-year warranty.  Price: $18,900.  

 

Specifications: Panerai Luminor Marina 44mm − Guillaume Néry Edition (PAM01122—limited edition of 70 pieces, boutique edition).  

Movement: Automatic Caliber P.9010, 6mm thick, 28,800 vph, two barrels, three-day power reserve.

Panerai’s own caliber P.9010, with two barrels and supplying a three-day power reserve.

Case: 44mm by 16.2mm sandblasted DMLS titanium, safety lock crown protection device (protected by trademark) in sandblasted titanium, titanium bezel, crown and bridge lever with rubberized coating, sapphire crystal, twelve-sided screwed caseback, sandblasted titanium with DLC coating, engraved with the “70 Years Warranty” logo, water resistant to 300 meters.

Dial: Black with dégradé effect, sandwich structure with Arabic numerals and indexes 
in white SuperLuminova with green luminescence. Seconds at 9 o’clock, date at 3 o’clock.

Strap: Recycled PET, black with white stitching
 and trapezoidal pin buckle in titanium with DLC coating. Additional white rubber strap with luminescent
 “Officine Panerai” personalization.

Price: $18,900. 

By Marc Frankel

It goes without saying that Dive Watches are one of the most popular styles of men’s watches sold today. But what many don’t know is that invoking the “dive” moniker actually has legal implications. Writing the word “Divers 200M” or any similar mark with “Diver” written on the dial or case back immediately invokes ISO 6425. The ISO (International Organization for Standardization) is an international body that writes standards for the commercial industry.

Before we get into ISO 6425, let’s talk about dive watches first. In modern times, very few SCUBA divers actually rely exclusively on a wristwatch while underwater. As an example, my own dive master had a beautiful Rolex Submariner on his wrist during classroom lessons, but once we hit the water, the Rolex was replaced with a dive computer.

The newest Ball Watch Engineer Hydrocarbon NEDU features 600 meters of water resistance, enhanced shock resistance and strong anti-magnetic properties.

Pre-computer

Before the advent of these modern and multi-function computers, divers relied on their mechanical watches to keep track of the key data points of total time submerged as well as bottom time in order to calculate residual nitrogen in the blood, and determine when, how many, and how long decompression stops should be if needed.

The dive watch, in this case, was performing a critical function, where a malfunction could spell disaster for the diver. This is why the ISO spec was developed, because dive watches were so critically important as instruments that protected the user’s health and safety. Today the analog dive watch continues to be worn while diving, but is more of a fashionable backup in the unlikely case the computer fails.

The Seiko Prospex SPB189 features a silicone strap or a titanium bracelet with super-hard coating and tri-fold push button release clasp with secure lock and extender. 

ISO 6425 is a rigorous specification titled “Horology – Divers’ watches” that supersedes older specs first released in the mid 1990s. In essence, it spells out what qualities a Dive Watch must have, and the methods with which to test them.

ISO Tests

Among the tests that ISO 6425 calls for includes, but is not limited to; temperature extremes, day and night visibility, magnetic resistance, salt spray, shock resistance and of course, water resistance. Obviously, we all expect water resistance to be one of the parameters checked. However, since water resistance is so important to the function of the dive watch, the actual pressure (depth) to which the watch is tested is 25% beyond the stated water resistance limit of a particular watch.

The Ulysse Nardin Diver X Nemo Point limited edition.

For example, a dive watch rated to 200 meters (20atm) is actually tested to 250 meters in order to meet ISO 6425.  And it’s not a dry air test. It is a true wet test, with a follow up condensation test to see if any moisture has found its way into the watchcase.

Furthermore, ISO 6425 states that EVERY watch certified to the spec needs to have its own water resistance individually tested. This means that if you are wearing a watch bearing the “Divers” mark on the dial or case back, that particular watch has been tested to 25% beyond the depth stated on the dial. Not a sample, but the very piece you are wearing. This is the ONLY way to ensure it will perform flawlessly under the stresses of diving.

The new TAG Heuer Aquaracer 43mm Tortoise Shell Effect Special Edition.

On my YouTube channel I discuss ISO in detail in my Watch and Learn series. In addition to water resistance, another ISO test that was actually quite fun to perform was the requirement that the strap needs to withstand about forty pounds of pull (simulating getting snagged on something) without the spring bars popping or tearing the strap itself. It was a great test to replicate, and the results were pretty eye opening.

One of several new models within the Torgoen T43 Diver watch collection.

So the next time you see the word “Dive” on watch dial, you’ll know that you are looking at an individually proven and tested dive watch that meets or exceeds the ISO 6425 quality standard!

Thank you for reading, and thank you for watching.

Marc Frankel, Video Editor, About Time

Founder, Long Island Watch

 

 

Two brand-new releases from Seiko Prospex recall historic diver’s models from 1968 while a third new diver’s watch, offered on a silicone strap or a titanium bracelet, features a lighter titanium dial and a bracelet built with references to a Shogun’s helmet and armor.

The Seiko Prospex SPB189 ‘Shogun’ features a titanium bracelet with super-hard coating and tri-fold push button release clasp with secure lock and extender.

The movement

Seiko has updated both models with the solid 6R35 automatic mechanical movement, which is appreciated for both its robust nature as well as its 70-hour power reserve.

Bi-directional winding via the magic finger system adds power to the movement while wearing the watch, but you can also manually wind it as well. Also, for all the watch “hacks” out there fixated on stopping the second hand in order to coordinate their next mission, the 6R35 does in-fact offer this over-appreciated feature.

While critics may search for other depredations in the fact that the frequency of the caliber 6R35 at 21,600 vph is a bit slower than other Japanese options, accuracy is the same or similar to those slightly faster mechanical heartbeats. One wonders if the internet’s instant experts have considered that putting less stress on a system that will inevitably need service and/or repair down the road might actually be a benefit rather than a detriment.

The Seiko Prospex SPB191 ‘Shogun’ ($1,350 on silicone strap).

Shogun debuts

Seiko fits this movement into its Propex “Shogun” series (SPB189 and SPB191) are crafted in a 43.5 mm hardened titanium case rated to 200 meters of water resistance with the crown at the traditional 3 o’clock position. A super-huge date display is made even larger by a magnifying cyclops window, with a uni-directional diver’s bezel atop. The sapphire crystal over the dial will be difficult to mar or scratch unless you shatter it entirely.

Side view of the Seiko Prospex SPB191 ‘Shogun.’

Like its sister dive models, the Seiko Prospex ‘Shogun’ could not be any easier to read; Broad hands coated in a thick layer of LumiBrite glow brightly – just like the hour markers. Time is clearly of the essence with these masterful classics. Offered with a choice of a silicone strap at $1,350, or a titanium bracelet for an extra $200, the Shogun will be a fan favorite for both real and “desk” divers.

Side view of the SPB189 Seiko Prospex ‘Shogun.’

For Japanese warrior fans, Seiko says the triangular notches in the rotating bezel on this model resemble the ornaments of a traditional Shogun helmet. The yabane or “arrow feather” link shape of the bracelet version, according to the brand, calls to mind weapons and armor.

The Seiko Prospex SPB185 is a contemporary interpretation of Seiko’s famous Diver from 1968.

Steel Sixties

Bringing us back to 1968, the Seiko Prospex Diver SPB185 and SPB187 are slightly smaller at 42mm, slightly heavier as they are cast in steel, and slightly less expensive due to the aforementioned reasons.

The new Seiko Prospex SPD187 is a new interpretation of Seiko’s famous Diver from 1968.

Broader shoulders separate the sister-types, as does a crown migrated slightly south to the 4 o’clock position. Other nuances of design define each as the hands, markers, and bezel are endemic to each design. Otherwise these are very similar in the chassis build quality. Available only on a solid link steel bracelet, the 185 and 187 retail for $1,200.