Tudor · Black Bay

Strap for Tudor Black Bay 79250BA

Takes 23 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width23 mm
Case diameter43 mm
Reference79250BA
FamilyBlack Bay
MovementTudor caliber MT5601 Hours, Minutes, Seconds | Chronometer
CaseBronze
CrystalSapphire
Water resistance200

Spring bar

Spring bars for Tudor

The right category for this model · choose the 23 mm size

The Black Bay 79250BA, seen from the bench

The Black Bay reference 79250BA features a 43mm case made of bronze and stainless steel. It is equipped with the automatic Tudor MT5601 caliber with chronometer certification, providing hour, minute and second indications. The lugs measure 23mm in width.

Frequently asked questions

What is the lug width of the Tudor Black Bay Bronze 79250BA?

The lug width of the Tudor Black Bay Bronze 79250BA is 23 mm. This specific measurement, inherited from 1970s Tudor submersible models, allows the use of standard aftermarket straps without mechanical adaptation. To verify the measurement, place a digital calliper perpendicularly between the internal holes of opposite lugs.

Which strap is most suitable for the Tudor Black Bay 79250BA?

For the 79250BA, we recommend straps in dark alligator, vegetable-tanned calf, or shell cordovan, which evolve aesthetically in parallel with the natural patina of the bronze case. Alternatively, an acrylic navy blue NATO strap maintains sporting versatility, whilst a black elastomer ensures complete waterproofing. The 23 mm width guarantees broad availability in quality catalogues.

How do you change the strap on the Tudor Black Bay 79250BA?

The 79250BA utilises a standard <a href="/pages/termine-glossario/deployante">deployante</a> clasp. Procedure: use a spring bar tool to push the horizontal locking pin on the lugs, or employ a micro-soldering heat tool (horological method). The round, smooth lugs have no special retention features, making strap changes straightforward even for beginners. We recommend performing the operation on a protected surface to prevent scratches to the bronze case.

Is an aftermarket strap compatible with the Tudor Black Bay 79250BA?

Yes, any strap with a 23 mm lug width is compatible with the 79250BA. International standardisation ensures that straps from any specialised manufacturer (Milanostraps, Hirsch, Barenia, Fluco) fit perfectly to the model's lugs without play or excessive tension. Always verify the measurement before ordering.

How long does a leather strap last on the Tudor Black Bay 79250BA?

Durability depends on material and usage. A quality vegetable-tanned strap (Barenia, Horween) lasts 4-7 years with periodic maintenance (protective cream every 6 months). Natural alligator lasts 5-8 years. The 79250BA, being a sporting and nautical instrument, suggests rotating between at least 2-3 straps to prolong the life of each. Elastomers and fabric NATO straps have indefinite lifespan but require regular cleaning.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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