Strap for Heritage Black Bay Chronograph S&G / Champagne / Bund

The lug width of the Tudor Black Bay Chronograph 79363N-0008 is 22mm. This measurement is taken between the lateral grooves of the case and represents the internal diameter of the lug tube. Always verify this measurement with a digital calliper before purchasing a strap, as even half a millimetre deviation would result in improper fitment.

For this model, we recommend African alligator leather for elegance without compromise, Japanese shell cordovan for patina development over time, or grained calf if you require water and perspiration resistance. In summer, a cognac-coloured strap enhances the yellow gold; in autumn, a dark brown (tête-de-maure) adds gravitas. For extreme sports, a technical NATO strap in Cordura nylon is acceptable, but represents a functional concession only.

The Tudor Black Bay Chronograph utilises tube lugs, so you must remove both pins from inside the case using an appropriate tool (a mallet and pusher pin, or dedicated T-bar key). Do not attempt to force the pins downward by striking the case. Once the lugs are free, the old strap slides out. Install the new strap by aligning the holes and reinsert the pins. If unsure, entrust the task to a competent technician at an authorised service centre.

Yes, any strap with a 22mm lug width is mechanically compatible with this chronograph, but aesthetics demand stylistic compatibility as well. A 22mm strap designed for a Submariner may not balance proportionally identically on a 41mm case. We recommend selecting straps conceived for 40–42mm chronographs for optimal visual coherence.

An alligator or shell cordovan strap of quality endures 3–5 years with daily wear and proper maintenance (brushing, protection from extreme humidity during sleep). Grained calf lasts 4–6 years as the internal gum provides elasticity. Durability depends on climate, frequency of water immersion, and how firmly you reattach the fixing pin. We recommend servicing every 2 years at Casati Milano.