SM40-DT-BI-BR-L-S Supermarine 300M Date Brown Dial on Leather Strap

Product information



Secure Payment

Key Features

  • This timepiece features a 40mm gold and steel case paired with a high quality leather strap. It showcases a distinctive brown dial and is powered by a precise automatic winding movement. The watch is designed with a water resistance of up to 300m.
  • We are Authorized Dealers, ensuring you receive 3 Year warranty directly from Bremont.
  • Worldwide Shipping.
  • Multiple financing options. Learn more.
  • All Features...

Need assistance?

Click to contact one of our specialists.

FREE* Winder/Case with Selected New Watches

FREE Shipping on Orders Over $1,000

Full Factory Warranty

Secure Payment


Bremont SM40-DT-BI-BR-L-S Supermarine 300M Date Brown Dial on Leather Strap

The new Supermarine 300m and 300m Date models have been entirely redesigned and now feature a new, sleeker and slimmer profile case shape crafted in 904L steel to maximise robustness and comfort in unison.

This new symmetrical case silhouette includes both crown and bezel guards, ensuring practical operation whilst increasing durability and safety by preventing accidental adjustment or damage through shocks or knocks.

The anodised aluminium knurled edged bezel features trapezoid indexes which flow from the bezel onto the dial, forming a naval inspired cross-hair, drawing the eye to the centre of the striking gradient dial. This is combined with improved durability, the clarity of applied indexes and the use of Super-LumiNova® for visibility in low light conditions.

An entirely new 904L steel bracelet has been developed for the Supermarine range offering exceptional fluidity and quality with an undulating shape which is well suited to all wrist sizes. Infinity shaped links alternate in a polished and satin finish. The watch is also available with a new military influenced chevron performance rubber strap or a vintage brown leather lifestyle strap with top stitching.

The case back is engraved with a map of the world’s oceans, emphasising the intent of the this practical elegant sports watch.




3 Year

Reference Number





Satin & polished 904L stainless steel case with rose gold bezel


Stainless steel screw-in and decorated closed case back

Case Diameter ⌀



Domed Anti-reflective, Scratch Resistant Sapphire Crystal


Bremont’s New Icon, Engraved Onto The Crown

Water Resistance






Dial Markers

Applied Super-LumiNova® indexes


Sword hands are illuminated with Super-LumiNova®


Central Hour/Minute/Second, Unidirectional rotating bezel, Date window at 3 o'clock

Movement Type


Movement Description

Automatic movement with 50H power reserve and Date


Leather strap


Brown leather

Recommended For You

Discover More Great Products

Frequently Asked Questions

Common Questions Answered

We are specialists with over 25 years in the watch industry. We are authorized dealers of more than 60 watch brands and have a 4.9 out of 5-star rating on Google Reviews with over 1,700 reviews. Customer satisfaction is our top priority.

We are located in Naples, Florida, but we ship to customers all over the United States and around the world, with some exceptions.

Yes, we offer free US shipping on orders over $1,000.

  • US Shipping: FedEx 2-Day Delivery. Optional: FedEx Overnight Shipping with additional charges.
  • International Shipping: FedEx (3 - 7 days).

Yes, we offer international shipping. Please note that import duties, taxes, and charges are the buyer's responsibility. Contact us to confirm if we can ship to your specific location.

Yes, All our shipments are fully insured during transit until it is delivered to you.

Yes, this watch comes with a 3 Year warranty directly from Bremont.

Absolutely! We accept trade-ins for used watches. Contact us for more details on how to trade in your watch.

We charge taxes only for sales in Florida.

We accept Wire Transfers, Credit Cards, Bitcoin, PayPal, Apple Pay, and Google Pay.

Yes, we offer PayPal Credit, Affirm, and Jewelers Reserve as credit methods. Read more here.

We have a 7-day return policy. Read our full return policy here.

Yes, we offer a FREE* winder or case on selected watches.

Yes, we offer repair and servicing for a wide range of watch brands. Our expert technicians ensure your timepieces are well-maintained and in perfect working condition.

Product can't be added to the cart

Sorry. We can't add this product to the cart at this moment, pleas try again later.