Bremont Supermarine 300M GMT ‘Tundra’ 40mm Automatic Watch
£3,850
In stock - free delivery on 25th March
Bremont Supermarine 300M GMT ‘Tundra’ 40mm Automatic Watch | £3,850
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 (M147287)

Taking inspiration from Iceland’s rugged landscapes, this Bremont Supermarine 300M GMT ‘Tundra’ 40mm Automatic Watch delivers a bold companion, built for adventure. Combining Bremont’s precision engineering and uncompromising functionality, this pioneering timepiece excels in every moment.
At A Glance
- Presented on a quick release stainless steel bracelet with a micro adjustment feature and fastened with a foldover clasp
- 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-B |
Range | Supermarine |
Collection | Supermarine 300M |
Strap/Finish | Stainless Steel |
Strap Type | Bracelet |
Watch Movement | Automatic |
Function | GMT 24HR , Date |
Water Resistancy | 300m |
Case Size (mm) | 40 |
Dial Colour | Green |
Markers | Index |
Clasp Type | Fold Over Clasp |
Glass Type | Sapphire Crystal Glass |
Manufacturer Warranty | 3 Years |
Finish | Matt |