Monochrome Watches
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The Second-Generation Bremont Supermarine S302 GMT Diver

To highlight the GMT functionality, the new S302 replaces the essential diver's elapsed time bezel with a 24-hour variant.

| By Denis Peshkov | 3 min read |
Bremont Supermarine S302 GMT Diver Second Generation 2023 update

Bremont‘s diver-oriented model range, the Supermarine, made its splashy debut over ten years ago with the 43mm Supermarine S500. In 2017, the S301 followed suit, featuring a more compact 40mm diameter case. The Supermarine collection expanded in 2021 with new models, specifically the S302 series, which added an office GMT function to the S301 range. This fully equipped, practical sports watch with British flair is now entering its second generation, with the updated Supermarine S302.

The Supermarine S302, characterised by its 40mm case employing Bremont’s three-piece construction, showcased hardened steel enveloping a DLC-black centre case with a steel caseback. Offering a water resistance of 300 meters, it boasted a matte black dial and a matching ceramic dive bezel. Powering this timepiece was Bremont’s BE-932AV (based on an ETA 2893-2), chronometer-rated automatic movement with a 24-hour independent GMT function – a so-called office or caller GMT function. In the latest rendition of the S302 series, English watchmakers reveal five new references with fresh aesthetics and improved movement characteristics.

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Retaining the 40mm case with its distinctive lugs, measuring 13mm in thickness and 49mm lug-to-lug, the second-generation Bremont Supermarine S302’s design echoes its predecessors. The case continues Bremont’s signature Trip-Tick construction, featuring three pieces, including a scratch-resistant DLC-treated barrel, offering a visually pleasing image when viewed from an angle. The domed, anti-reflective, scratch-resistant sapphire crystal protects the dial, while the closed stainless steel screw-in caseback, decorated with a seaplane image, takes care of the movement. The screw-down crown with Bremont’s propeller logo in the cap looks easy to use. A standout feature in the new steel S302 watches is the bicolour, blue and green aluminium, unidirectional 24-hour bezel, with a triangle index at 12 o’clock, marked with a Super-LumiNova dot.

Bremont Supermarine S302 GMT Diver Second Generation 2023 update

The new Bremont S302 blue metal dial with indices printed in white Super-LumiNova that shines blue in the dark features a matching blue sloped dial ring with a printed minutes track. The 15, 45 and 60-minute numerals are presented in red; the position of 30 is occupied by the mention of London, also in red. The aperture at 3 o’clock shows a white date on a blue background, keeping the colour scheme balanced. Prominent, polished, nickel-plated hour and minute hands and the seconds hand are filled with the same Super-LumiNova used on the indices. The polished and nickel-plated GMT hand with a large arrow at its tip and a bright orange outline gets white Super-LumiNova treatment, too, only with green emission for contrast. All “glow-in-the-dark” elements received several layers of luminous material to ensure excellent legibility in poor light.

As mentioned, the previous Supermarine S302 version used a modified ETA 2893 calibre for timekeeping. The new references received an upgraded BE-932AV movement with an ETA base, built with 25 jewels, and equipped with a Glucydur balance wheel, Anachron balance spring and a Nivaflex mainspring. This movement operates at 28,800 vibrations/hour and now has a power reserve of 50 hours, an improvement from 38 offered by the earlier editions. As always with Bremont, it’s chronometer-certified and will keep you within -4/+6 seconds/day accuracy.

Bremont Supermarine S302 GMT Diver Second Generation 2023 update

Presented on a blue integrated rubber strap, a vintage brown leather strap or a stainless steel bracelet, the new S302 series offers versatility. These timepieces cater to diverse preferences, priced at EUR 3,900 for the strap versions and EUR 4,350 for the bracelet. 

Bremont Supermarine S302 GMT Diver Second Generation 2023 update

Bremont also introduces a pair of dark-coloured Jet-design S302s featuring a black DLC case, complemented by a black ceramic unidirectional rotating bezel and a sandblasted black dial with vintage SLN elements instead of white. Worn on a black integrated rubber or vintage black leather strap, these Jet-design watches are offered at EUR 4,400, inviting you to explore the depths of style. For more information, please visit

2 responses

  1. Without an elapsed time bezel this watch is not a “diver” as it does not comply with ISO 6425. It is a GMT watch with a good deal of water resistance rather like the stainless steel 43.5mm Omega Planet Ocean GMT.

  2. I’ve been tracking this with interest. Is there any reason the Ocean limited edition was excluded from this article? It was there on all other publications


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