Bremont · Supermarine

Strap for Supermarine S500 Green

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
ReferenceS500BKGN
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 S500BKGN

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Supermarine S500BKGN, seen from the bench

The Supermarine Bremont houses the BE-36AE caliber with hour, minute, second, date and day functions, certified as a chronometer. The model features 22mm lugs and is part of the collection dedicated to professional precision instruments. The S500BKGN reference incorporates the technical specifications developed by the British brand for use in extreme environments.

Frequently asked questions

What is the lug width of the Bremont Supermarine S500BKGN?

The lug width of the Bremont Supermarine S500BKGN is 22mm. This measurement refers to the distance between the two spring bars that support the strap. It is essential to verify that any aftermarket strap is precisely dimensioned at 22mm to ensure a perfect fit without lateral play or structural stress.

What type of strap is recommended for the Bremont Supermarine S500BKGN?

For the Supermarine S500BKGN we recommend three construction options. Alligator or shell cordovan leather for elegant daily wear with evolving patina. NATO textile strap for versatility and quick changes. FKM or EPDM rubber if the watch is destined for frequent diving or marine environments: it guarantees stability when wet and resistance to chlorine and salt.

How do I change the strap on my Bremont Supermarine S500BKGN?

Changing the strap on the Bremont Supermarine S500BKGN requires a spring bar tool. Position the watch on a soft surface. Insert the tip of the spring bar tool under the first lug, lift the internal spring, then extract the pin laterally. Repeat on the other side. Once the lugs are free, insert the new strap by aligning the holes with the pins, then press downward until the tension springs click into position. Verify that the strap has no play.

Is there a certified aftermarket strap compatible with the S500BKGN?

Yes. Any strap with a 22mm lug width is compatible with the Bremont Supermarine S500BKGN. Milano Straps offers a collection of 22mm straps in Italian artisanal leather (alligator, vegetable-tanned calf, shell cordovan), premium NATO straps and rubber options. All are verified for dimensional fit and mechanical resistance.

How long does a leather strap last on the Bremont Supermarine S500BKGN?

The durability of a leather strap depends on usage and environmental conditions. Superior quality leather with vegetable tanning resists 4-6 years of daily wear, developing visible patina after 6-12 months. If exposed to constant moisture (frequent marine use), durability reduces to 2-3 years. An FKM rubber strap lasts 5-7 years in frequent diving. Maintenance — drying the strap after salt water contact — significantly extends longevity.

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