Strap for Black Bay 36 S&G / Silver / Bracelet

The Tudor Black Bay One with reference 79643-0002 features a lug width of exactly 19 millimetres. This measurement is specific to this model line and is not interchangeable with other Tudor references. To verify compatibility, measure the distance between the two lug holes: the figure must correspond precisely to 19mm, otherwise the strap will not seat correctly on the springbars.

For the Black Bay One 79643-0002, we recommend alligator leather straps in black for an elegant and dramatic effect, or cognac-hued vintage calf for contrast with the two-tone case. For a sportier approach, a vegetable-tanned strap with pebble texture maintains the model's authenticity. Your choice should reflect intended use: noble leathers such as alligator emphasise the horological craftsmanship, whilst more rustic hides preserve the original sporting ethos.

To change the strap, use a spring bar tool to compress the elastic pins at the lug ends. Position the tool in the small hole on the inner side of the lug, gently compress the pin inward, and the strap will release. Repeat on the opposite side. For reassembly, insert the elastic pins into the holes of the new strap, ensuring proper seating before releasing pressure. If uncertain, Casati Milano atelier provides assisted fitment with precision assurance.

Yes, you may fit aftermarket straps of superior quality, provided they feature a 19mm lug width. Artisan straps typically offer noble materials and refined finishing, frequently surpassing standard options. We recommend straps with adjustable lugs in brushed stainless steel to maintain the two-tone aesthetic, and deployant clasps for practicality and security. MilanoStraps supplies bespoke straps precisely dimensioned for the 79643-0002, with leather choice, stitching options, and monogramming.

A well-maintained natural leather strap typically lasts 2–4 years with daily wear, depending upon leather quality and environmental conditions. Noble hides such as alligator and shell cordovan age beautifully, developing patina and increasing in character. To maximise longevity, avoid prolonged exposure to salt water and excessive humidity. Artisan straps from Casati Milano include an 18-month warranty against manufacturing defects and offer discounted replacement services for valued clients.