Arnold & Son sails into new horological territory with Longitude Titanium, the watchmaker’s first luxury sport watch and its first all-titanium collection.
The nautically themed watch is a COSC-certified chronometer with a 42.5 mm titanium case and a matching titanium bracelet. Its vertical dial layout honors marine chronometers, which the famed British watchmaker and company namesake John Arnold pioneered.
Nautical references and rounded edges abound on the collection. While the middle of the case echoes the waterline of a ship, the bezel’s base has been notched sixty times to mimic the typical fluted ring John Arnold used on his historic marine chronometers. Satin finishes dominate all flat surfaces, which allows the few polish edges to stand out. 
This relatively unadorned dial sets it apart from the typically complex Arnold & Son layouts, which typically feature skeletonized, moon phase and busier artisanal designs.
Particularly large, satin-finished, polished and luminescent hour-markers echo the shape of the hands and the bracelet links.
The vertically aligned layout features a mirror-polished power-reserve indicator at 12 o’clock and a prominent sub-seconds display at 6 o’clock.
Inside the Longitude Titanium Arnold & Son fits the new, COSC-certified in-house A&S6302 caliber, an automatic movement with a gold rotor carved to recall both a sextant and the prow of an 18th-century English frigate. As with all Arnold & Son movements, the power reserve here is long, offering a full sixty hours of autonomy on a full wind.
Arnold & Son again reaches back to its namesake with the dial options for the Longitude Titanium. To recall the coast of Cornwall, John Arnold’s birthplace, Arnold & Son offers the first collections in a sandy golden shade called Kingsand (a local beach), ocean blue and fern green.
The Kingsand model is a limited edition of 88 pieces. Each watch arrives with an additional rubber strap that is interchangeable with the titanium bracelet.
Prices: CHF 22,600 (Kingsand) and CHF 21,500 (blue and green).
Specifications: Arnold & Son Longitude Titanium
Movement: Calibre A&S6302, self-winding mechanical, COSC-certified, 36 jewels 36, Power reserve 60 hours, frequency 4 Hz/28,000 vph. Finishes mainplate: palladium finish, circular-grained bridges: palladium finish, polished and chamfered, ‘Rayons de la Gloire’ motif wheels: golden finish, circular satin-finished screws: blued and chamfered, mirror-polished heads, oscillating weight: 22-carat red gold (5N), skeletonized, chamfered, engraved.
Dial: Kingsand gold, ocean blue or fern green PVD treatment, vertical satin finish power reserve: blue PVD treatment, golden finish or rhodium-plating, mirror-polished small seconds, snailed hour-markers: rhodium-plated or golden finish, coated with Super-LumiNova hands: rhodium-plated or golden finish, skeletonized, coated with Super-LumiNova.
Case: 42.5mm by 12.25mm titanium, Crystal: sapphire, anti-reflective coating on both sides, case back: sapphire crystal, anti-reflective coating, water-resistance: 100 m/330 ft.
Interchangeable bracelet: Titanium, folding clasp. Additional strap: blue or green rubber, titanium pin buckle.
Limited edition: Kingsand gold: 88 timepieces, ocean blue: not limited, fern green: not limited.
Prices: CHF 22,600 (Kingsand) and CHF 21,500 (blue and green).
The second debut offers a silver dial and a matching stainless steel bracelet ($795).
Finally, a third new Series C model enhances its the luxury appeal with a rose gold-tone stainless steel case and a dark brown ‘chocolate’ dial finished, all fixed to a black rubber strap ($750).
Both are cased in steel, with the H20 model boasting a light blue CVD dial and the Golden Gear edition presenting a slate-colored satin-finished dial with gold accents.
The movement features a 55-hour power reserve, a ruthenium-coated finish, a tungsten rotor, radial Côtes de Genève finishing and a skeletonized gear train.