Strap for Black Bay 31 S&G / Silver / Bracelet

The lug width of the Tudor Black Bay One 79603-0002 is precisely 16 millimetres. This measurement must be respected accurately to ensure proper fit and functionality. A narrower strap will create lateral play and instability, whilst a wider strap will not seat correctly in the lug apertures. You can verify the correct width by measuring the internal distance between the lugs using a digital caliper, or by consulting the official Tudor specification sheet.

For the Black Bay One 79603-0002, alligator leather with vegetable tanning represents the definitive aesthetic choice, reinforcing the vintage character of the black dial. European calf leather offers softness and drape for formal occasions. If you seek decade-long durability and evolving patina, shell cordovan is the definitive solution. For serious aquatic activities, NATO straps in nylon-cotton provide buoyancy and salt-water resistance. FKM (synthetic rubber) models are ideal if you regularly rotate straps and value ease of maintenance.

Strap replacement involves extracting the spring bars (hinge pins) that connect the strap to the case lugs. Use a dedicated strap removal tool to apply controlled lateral pressure to the bars. Insert the bar into its housing carefully, then push downward until you hear or feel the click of engagement. Proceed symmetrically with both lugs to maintain balance. If you lack experience, consult a professional watchmaker to avoid damage to the spring bars or lug apertures.

Yes, any strap measuring 16mm in width is compatible with the Tudor Black Bay One 79603-0002. Milano Straps specialises in artisanal straps in this dimension, customisable in leather type, colour, and construction details. Before purchasing, verify that the aftermarket strap is of certified quality, with well-defined lugs and even stitching. Handcrafted Italian straps from Casati Milano guarantee constructive precision and longevity, available both off-the-shelf and bespoke through the atelier.

Longevity depends on material and wearing conditions. A quality alligator or calf strap, worn regularly without prolonged exposure to water or excessive humidity, typically lasts 4–6 years. Shell cordovan, thanks to its natural density, easily reaches 10–15 years with minimal maintenance. NATO textile straps withstand 3–5 years of regular use and are simpler to replace since they do not require spring bar removal. The 18-month warranty provided by Casati Milano covers manufacturing defects, whilst natural ageing is considered part of the leather's aesthetic evolution.