Bremont · Supermarine

Strap for Supermarine S500 Silver

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter43 mm
ReferenceS500SI
FamilySupermarine
MovementBremont caliber BE-36AE Hours, Minutes, Seconds | Date, Day | Chronometer
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Supermarine S500SI

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Supermarine S500SI, seen from the bench

The Bremont Supermarine S500SI is a professional diving watch featuring a 43 mm stainless steel case certified to 500 meters. It is powered by the internal Bremont BE-36AE chronometer movement with date, day, and seconds complications. The watch features the proprietary Trip-Tick case design for modular movement protection and is assembled by hand at Henley-on-Thames with a 22 mm lug width.

Frequently asked questions

What is the lug width of the Bremont Supermarine S500SI?

The lug width of the Bremont Supermarine S500SI is 22 millimetres. This measurement is critical when selecting compatible aftermarket straps. It is essential to measure it accurately using a digital calliper positioned perpendicular to the lug, midway along its length, to ensure proper fit and secure strap attachment without play or undue force.

Which strap is recommended for the Bremont Supermarine S500SI?

For the S500SI, alligator straps with vegetable tanning are recommended for daily and formal wear, whilst vulcanised high-density rubber straps are ideal for marine and diving environments. Tobacco or conker-brown alligator complements the stainless steel case, whilst black or navy blue rubber offers exceptional practicality and superior resistance to salt water corrosion.

How do I change the strap on the Bremont Supermarine S500SI?

To change the strap on the S500SI, use a spring bar tool to remove the pins from the lugs. Insert the tool into the small gap between the lug and pin, compress the internal spring, and extract the pin. Align the new strap with the lug holes and reinsert the pins until they click into place.

Can I purchase an aftermarket strap compatible with the Bremont S500SI?

Yes, high-quality aftermarket straps compatible with the Bremont S500SI are available. Milano Straps provides a specialised selection of 22mm artisanal straps, crafted in Italy, with options in alligator, vegetable-tanned calf, NATO, and rubber, all ready for shipment and customisable according to your aesthetic preferences.

How long does a leather strap last on the Bremont Supermarine S500SI?

An artisanal leather strap for the S500SI, crafted with Italian vegetable tanning, typically lasts 5-7 years with moderate daily use. Longevity depends on humidity exposure, body perspiration, and periodic maintenance. Preventative treatment with natural oils every 6-12 months significantly extends the strap's lifespan, allowing it to develop characteristic patina rather than deteriorate.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only