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Ask about Bremont HMAF Supermarine 300M Date 40mm Grey Dial Men's Watch SM40-DT-GRSS-HMAF-L-S
Specifications
The HMAF Supermarine 40 Date celebrates Bremont's enduring partnership with His Majesty's Armed Forces. Inspired by the Royal Navy and limited to 300 pieces, it features the official Navy heraldic badge at 6 o'clock and reflects the capability, purpose and human endeavour embodied by the British Armed Forces.
Inspired by the dark grey tones of naval vessels, the 40mm Supermarine is housed within a 904L steel case finished in an ultra-matt grey treatment and paired with a light grey vertical-gradient dial. A full ceramic bezel insert enhances durability, while hands and indexes feature next-generation Super-LumiNova for exceptional legibility in low-light conditions.
Powered by the automatic BB64 movement with a 56-hour power reserve, the HMAF Supermarine 40 Date delivers 300m of water resistance and is fitted to a brushed grey nubuck leather strap with pin buckle. Purpose-built for performance, it remains true to Bremont's mission of creating durable British tool watches built for adventure and exploration.
100% Authentic with 5-Year Bremont Backed Warranty Included. Authorized Bremont Retailer.
| Item | Bremont Men's Watch |
| Model # | SM40-DT-GRSS-HMAF-L-S |
| Collection | HMAF (His Majesty's Armed Forces) - Royal Navy Edition |
| Limited Edition | Limited Edition of 300 Pieces |
| Case | 40mm uni-body case in 904L stainless steel finished in ultra-matt grey treatment; case length 49mm, lug width 20mm |
| Case Back | Stainless steel screw-in decorated closed case back finished in ultra-matt treatment |
| Bezel | Grey ceramic uni-directional dive bezel; satin grey ceramic bezel insert with raised polished markers |
| Crystal | Domed anti-reflective sapphire crystal |
| Dial Color | Light grey vertical-gradient dial |
| Dial Features | Grey gradient dial with applied indexes infilled with white Super-LumiNova (blue emission); grey dial ring with printed minutes track; polished rhodium hour, minute and second hands filled with white Super-LumiNova (blue emission); official Royal Navy heraldic badge (insignia) at 6 o'clock; date window at 3 o'clock |
| Clasp | Pin buckle |
| Strap Color | Grey |
| Strap Material | Brushed grey nubuck leather strap with white side stitching, 20mm lug width |
| Movement | Bremont Calibre BB64AH automatic, 25 jewels, Glucydur balance wheel, Anachron balance spring, Nivaflex mainspring, 28,800 bph (4Hz) |
| Power Reserve | 56 hours |
| Case Width | 40 mm (Case Thickness 12 mm) |
| Water-Resistant | 300 meters |
Bremont
British Luxury Timepieces

FAQS
Are you guys really an Authorized Retailer?
Yes! We are really an Authorized Retailer for all the brands we carry.
Do you offer free shipping?
You better believe it! All orders include Free Shipping in the US and are fully insured. We take great pride in ensuring your watch arrives in excellent condition.
Where do your products come from?
Since we are an Authorized Retailer of all the brands we sell on our website, our products come directly from each manufacturer. That means all our watches are 100% authentic, brand-new and include a warranty at no charge to you.
My Watch Has An Issue, What Do I Do?
Don't sweat it. Just like anything with a machine, watches can sometimes run into issues. Thankfully all our watches come with a warranty directly from the brands we work with. If you run into issues with your watch, you can always contact us for assistance on a repair or you can contact the manufacturer directly.
Does the watch come with a box?
YES! All the watches we sell come with the official manufacturer provided watch box, manuals, warranty card and any other accessories which they may provide to us.
Can I Talk to Someone? I have some questions
Call us at 888-898-4795 or email service@timemachineplus.com.


















