Strap for Supermarine S500 Blue

The Bremont Supermarine S500BL features a lug width of 22 millimetres. This measurement is standard across the model and represents the optimal balance between structural case robustness and versatility in artisanal strap selection. To verify your watch's lug width, measure the internal space between the two lugs that support the strap: you should find exactly 22 mm. This width accommodates an extensive range of leather, alligator, NATO, and rubber straps.

Your choice depends on primary usage. For professional diving, a ballistic nylon NATO strap is optimal as the pass-through design around the case prevents watch loss if the spring bar fails. For elegant daily wear, a vegetable-tanned Tuscan leather strap in tobacco brown offers natural patina development and marine resistance. For maximum durability and formality, an ebony alligator strap is unsurpassed. FKM rubber, conversely, provides superior chemical and thermal resistance during extended diving or intense water activities.

Strap replacement requires a spring bar tool. Position the watch on a soft surface with the strap facing upwards. Insert the rounded end of the spring bar tool into the small groove on the side of the spring bar, then gently push outward until the bar retracts. Remove the old strap, align the new one with the lug apertures, and push the bar until you hear a click. Repeat on the opposite side. If you lack a spring bar tool, quality strap retailers provide one complimentarily or for minimal cost.

Yes, any strap with a 22 mm lug width is compatible with the Supermarine S500BL. Artisanal aftermarket straps, such as those by Casati Milano, often feature superior construction versus OEM alternatives, with naturally aged vegetable leather, reinforced stitching, and satin finishes. It is essential to verify the strap is proportioned to the case diameter (43 mm) to maintain aesthetic balance. Artisanal straps also permit customisations including buckle choice (deployante, ardillon, or velcro) and stitch colour.

An excellence-grade vegetable leather strap, with moderate daily use, typically lasts 5–8 years before replacement is necessary. Longevity depends upon leather quality, frequency of use, and maintenance. Vegetable leather resists freshwater exposure well, but seawater accelerates ageing if not rinsed and dried promptly. Periodic conditioning every six months with specialised products substantially extends service life. Alligator straps offer superior longevity, often exceeding 10 years. Ballistic NATO straps offer nearly unlimited durability, whilst FKM rubber maintains elastic properties for 7–10 years before gradual hardening occurs.