New Releases · 2026-06-17
Bremont’s HMAF Supermarine 40 Date is the Royal Navy diver
The maritime member of Bremont’s Armed Forces collection combines an ultra-matt grey steel case, ceramic bezel and 300-metre rating.
By Chronolume digest · Original English summary · Based on Bremont; launch date corroborated by Monochrome

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What to know
The HMAF Supermarine 40 Date interprets the Royal Navy through a restrained palette of ship-like greys. Its 40mm 904L-steel case receives an ultra-matt treatment, surrounding a light-grey gradient dial and full ceramic dive bezel. The official Navy heraldic badge sits above six o’clock, with luminous hands and indexes supporting underwater readability.

Bremont’s BB64 automatic movement supplies a stated 56-hour reserve, while the case is rated to 300 metres. The watch is fitted to brushed-grey nubuck leather, an unusual but deliberate choice for the presentation configuration. Reference SM40-DT-GRSS-HMAF-L-S is limited to 300 pieces and listed at £3,950. It is the sea-focused counterpart to the Army Terra Nova and RAF Altitude.

At a glance
| reference | SM40-DT-GRSS-HMAF-L-S |
|---|---|
| case | Ultra-matt grey 904L stainless steel, 40 mm |
| bezel | Ceramic dive bezel |
| dial | Light-grey vertical gradient with Navy badge |
| movement | Bremont BB64 automatic |
| powerReserve | 56 hours |
| waterResistance | 300 m |
| limitedEdition | 300 pieces |
| price | £3,950 |
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Bremont HMAF Supermarine 40 Date SM40-DT-GRSS-HMAF-L-S · SM40-DT-GRSS-HMAF-L-S ↗
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Source & attribution
Bremont; launch date corroborated by Monochrome · Published 2026-06-17 ↗


