Tudor · Black Bay

Strap for Tudor Black Bay 79250BA-0001

The Heritage Black Bay Bronze / Slate / Leather takes 23 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

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Lug width23 mm
Case diameter43 mm
Reference79250BA-0001 (aka: M79250BA-0001)
FamilyBlack Bay
MovementTudor caliber MT5601 Hours, Minutes, Seconds | Chronometer
Year2019
CaseBronze, Stainless Steel
Water resistance200 m

Spring bar

Spring bars for Tudor

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

Standard spring bar · length 23 mm · Ø 1.8 mm double flange · industry standard, no brand part number

Heritage Black Bay Bronze / Slate / Leather — watch

What length do I need?

Measure your wrist with a tailor's tape or a piece of string, comfortably snug.

Wrist circumferenceLength (long side / short side)
15.0–16.4 cm120 / 70 mm
16.5–17.8 cm125 / 75 mm
17.9–19.0 cm130 / 80 mm
19.1–20.3 cm135 / 85 mm
20.4–21.6 cm140 / 85 mm
21.7–22.9 cm145 / 90 mm

The ready-to-wear strap is 115 × 75 mm. For a smaller or larger wrist I make it in the right length: order your length.

What I'm asked about the Tudor Black Bay 79250BA-0001

What strap size does the Tudor Black Bay 79250BA-0001 take?

The Tudor Black Bay 79250BA-0001 needs 23 mm between the lugs. It's the size I've been fitting on it for years.

Can the strap on the Tudor Black Bay 79250BA-0001 be changed?

Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.

Can I put a leather strap on the Tudor Black Bay 79250BA-0001?

Yes, in 23 mm leather, as long as you don't wear it in the water: leather doesn't like the sea or the pool. For days in the water, rubber. On a 43 mm diver I go for a full-thickness strap, not a thin one. I don't keep rubber ready in 23 mm: write to me and I'll make it.

Which strap do you recommend for the Tudor Black Bay 79250BA-0001?

Rubber if you wear it in the water; otherwise a 23 mm calf strap, full thickness. I don't keep this size ready in the catalogue: I make it to measure. If you'd rather have something built on your wrist, the Casati atelier.

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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only

The atelier's website: casatimilano.com

Updated on · by Antonio Zichichi