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Tudor · Black Bay One

Strap for Tudor Black Bay One 79663-0006

The Black Bay 39 S&G / Black - Diamond / Bracelet takes 21 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

21mm
21 mm strapsAll Tudor
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Lug width21 mm
Case diameter39 mm
Reference79663-0006 (aka: M79663-0006)
FamilyBlack Bay One
MovementTudor caliber MT5602 Hours, Minutes, Seconds | Chronometer
Year2022
CaseYellow Gold, Stainless Steel
Water resistance100 m

Spring bar

Spring bars for Tudor

The right category for this model · choose the 21 mm size

Standard spring bar · length 21 mm · Ø 1.8 mm double flange · industry standard, no brand part number

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Black Bay 39 S&G / Black - Diamond / Bracelet — watch

Straps for the Black Bay One 79663-0006

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

What I'm asked about the Tudor Black Bay One 79663-0006

What strap size does the Tudor Black Bay One 79663-0006 take?

The Tudor Black Bay One 79663-0006 needs 21 mm between the lugs, usually 18 mm at the buckle. It's the size I've been fitting on it for years.

Can the strap on the Tudor Black Bay One 79663-0006 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 One 79663-0006?

Yes, in 21 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 39 mm diver I go for a full-thickness strap, not a thin one. I don't keep rubber ready in 21 mm: write to me and I'll make it.

Which strap do you recommend for the Tudor Black Bay One 79663-0006?

Rubber if you wear it in the water; otherwise a 21 mm calf strap, full thickness. You'll find it ready in the 21 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

For changing the strap

Classic Strap and Bracelet Removal Tooltwo-tip spring bar tool→Milano Straps Premium Swiss Standard Watch Bucklestang buckle, steel or PVD→Leather Conditioner Milano Strapsnourishes and protects the strap→Casati Milano Rectangular Epsom Leather Travel Case — Brownfor the watch and spare straps→

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