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Tudor · Black Bay GMT

Strap for Tudor Black Bay GMT 79830RB-00AF

The Black Bay GMT Air France takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

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Lug width

22mm
22 mm strapsAll Tudor
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Lug width22 mm
Case diameter41 mm
Reference79830RB-00AF (aka: M79830RB-00AF)
FamilyBlack Bay GMT
MovementTudor caliber MT5652 Hours, Minutes, Seconds, Additional 24 Hours Hand (adjustable) | Date | Chronometer
Year2020
CaseStainless Steel

Recommended spring bar

Modern Tudor 22mm spring bars — factory specification

Technical match for lug width and diameter · lug 22 mm · Ø 1.8 mm

View product →
All Tudor spring barsOpen →
Black Bay GMT Air France — watch

Straps for the Black Bay GMT 79830RB-00AF

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

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 GMT 79830RB-00AF

What strap size does the Tudor Black Bay GMT 79830RB-00AF take?

The Tudor Black Bay GMT 79830RB-00AF needs 22 mm between the lugs, usually 18 or 20 mm at the buckle. It's the size I've been fitting on it for years.

Can the strap on the Tudor Black Bay GMT 79830RB-00AF 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 GMT 79830RB-00AF?

Yes, in 22 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 41 mm diver I go for a full-thickness strap, not a thin one.

Which strap do you recommend for the Tudor Black Bay GMT 79830RB-00AF?

Rubber if you wear it in the water; otherwise a 22 mm calf strap, full thickness. You'll find it ready in the 22 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.

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

The atelier's website: casatimilano.com

Updated on · by Antonio Zichichi