Strap for Black Bay 31 S&G - Diamond / Champagne - Diamond / Bracelet

The Tudor Black Bay One 79613-0007 features a lug width of exactly 16mm. This is the distance between the case lugs. To verify, remove the strap and measure the space between the lugs: it must be precisely 16mm. This intermediate width is common in vintage and compact models, but less frequent in modern contemporary divers.

The choice depends on intended use: for elegance, an alligator strap in vegetable tanning in black or dark cognac enhances the dress aspect of the two-tone case; for sportiness and versatility, a five-piece NATO in ballistic canvas offers interchange practicality; for humid environments, vulcanised FKM rubber is waterproof and durable. Cordovan leather in vegetable tanning represents the ideal compromise, developing natural patina over time.

Remove the watch from your wrist. Locate the two lugs that secure the strap to the case. Use a spring bar tool to push the spring mechanism inward, freeing the strap from one end. Repeat on the other side. Insert the new strap through the lugs and press until the retention pin clicks into place. Verify it is secure before wearing the watch.

Yes, a 16mm strap is compatible with any watch featuring 16mm lugs. However, before purchasing, always verify the exact lug width of your watch, as a 1mm difference (15mm or 17mm) would render the strap incompatible. The 79613-0007 has exactly 16mm lugs, so it accepts straps certified for this width.

A natural leather strap with vegetable tanning, properly maintained, lasts 3-5 years before requiring replacement. Durability depends on daily use, sun exposure, and humidity levels. The leather develops patina over time, improving aesthetically. To extend lifespan, dry the watch after water contact, protect from prolonged direct sunlight, and occasionally apply a natural leather balm if necessary.