Bremont Supermarine 300M GMT ‘Tundra’ 40mm Automatic Watch
£3,600
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Bremont Supermarine 300M GMT ‘Tundra’ 40mm Automatic Watch | £3,600
Ring Size Guide
Ring Size | Circumference (mm) | Ring Size | Circumference (mm) |
---|---|---|---|
I | 48.0 | R | 58.9 |
J | 48.7 | S | 60.2 |
K | 50.0 | T | 61.4 |
L | 51.2 | U | 62.7 |
M | 52.5 | V | 64.0 |
N | 53.8 | W | 65.3 |
O | 55.1 | X | 66.6 |
P | 56.3 | Y | 67.8 |
Q | 57.6 | Z | 68.5 |
Please note that this is only a guide and will not take into account the style of ring. For example, if you are choosing a ring with a deep band width, you may need a larger size.
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Bremont Supermarine 300M GMT ‘Tundra’ 40mm Automatic Watch (M147288)

Built for every quest, this Bremont Supermarine 300M GMT ‘Tundra’ 40mm Automatic Watch takes inspiration from Iceland’s rugged landscapes. Combining the brands uncompromising functionality with a bold aesthetic, discover Bremont’s iconic adventurous spirit with this confident companion.
At A Glance
- Presented on a quick release black rubber strap with a micro adjustment feature and fastened with a buckle
- 40mm 904L stainless steel case with 300m water resistance
- 24H bi-directional bezel with a bi-colour aluminium bezel insert
- Green gradient dial with polished rhodium-plated hour, minute and second hands infilled with white Super-LumiNova® (blue emission), applied indexes infilled with white Super-LumiNova® (blue emission) and polished rhodium-plated GMT hand with coloured tip infilled with white Super-LumiNova® (green emission)
- Domed anti-reflective, scratch resistant sapphire crystal glass
- Powered by Modified Calibre 11 1/2’’’ BE-93-2AV automatic movement
- 50-hour power reserve
Specification
Supplier Code | SM40-GMT-SS-GNBK-R-S |
Range | Supermarine |
Collection | Supermarine 300M |
Strap/Finish | Rubber,Stainless Steel |
Strap Type | Strap |
Watch Movement | Automatic |
Function | GMT 24HR , Date |
Water Resistancy | 300m |
Case Size (mm) | 40 |
Dial Colour | Green |
Markers | Index |
Clasp Type | Buckle |
Glass Type | Sapphire Crystal Glass |
Manufacturer Warranty | 3 Years |
Finish | Matt |