British watchmaker Bremont updates its Supermarine GMT dive watch collection of 40mm steel watches with a trio of models now featuring a 24-hour GMT bezel with an inner 60-minute scale, all presented with new colors and updated hand designs.
The new Supermarine S302 emphasizes its GMT mode on the bezel, and as a result we see a new model with a very cool bi-color blue and green aluminum 24-hour unidirectional rotating bezel.
A second model, a limited edition Supermarine Ocean chronometer (and boasting its chronometer rating on the dial) offers a sharp-looking grey-dial with blue SuperLuminova indexes.
Look for new blue SuperLumiNova coating on indexes and hands and a contrasting green hue applied to the GMT hands on the debuts. All the new S302 models are also outfitted with an automatic GMT (ETA-based) movement with 50-hour power reserve and a date display. All are also water resistant to 300 meters. 
A third model in all-black livery, the S302 Jet edition, is cased in black DLC complemented by a black ceramic unidirectional rotating bezel and a sandblasted black dial.
Upcoming Debuts
New CEO Davide Cerrato explains that the update to the Jet edition is “just a little bit sexier,” than existing all-black Jet editions, hinting at further debuts later this year.
“In November, we will arrive with some new additions of the 500-meter Supermarine models,” he explains. “We are focusing on adventure inspiration. This revolves around the idea that nothing is impossible. And we use explorers and adventurers to back this up,” he adds.
One of those adventurers is marine biologist Ocean Ramsey and her partner Juan Oliphant. Both will wear the new grey-dialed Supermarine Ocean (limited to 400 pieces) during their aquatic research on sharks and on turtle conservation. Bremont is donating a percentage of proceeds from all Supermarine Ocean watch sales to the ocean conservation charity Save the Turtles International.
Prices: Supermarine S302 Blue-Green: Strap: $3,750 (rubber or brown vintage leather strap) and $4,200 (bracelet),
Supermarine S302 GMT Jet: $4,250 (vintage leather or rubber),
Supermarine S302 Ocean Limited: $4,000 (rubber or brown vintage leather strap) and $4,450 (bracelet).
The only nod to royalty on the dial is the regal purple seconds hand. Inside Bremont fits its ETA-based, chronometer-rated Caliber 11 1/2’’’ BE-36AE automatic movement.
Bremont explains that the coin is inspired by the concept of a traditional military challenge coin and features the official Coronation Emblem of HM King Charles III.