Seiko · Prospex Divers

Strap for Seiko Prospex Divers SRPB49

The Prospex Diver Samurai Stainless Steel / Blue / Bracelet 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 width22 mm
Case diameter44 mm
ReferenceSRPB49 (aka: SRPB49K1)
FamilyProspex Divers
MovementSeiko caliber 4R35 Hours, Minutes, Seconds | Date
Year2017
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Standard spring bar · length 22 mm · Ø 1.8 mm double flange · industry standard, no brand part number

Prospex Diver Samurai Stainless Steel / Blue / Bracelet — watch

What I'm asked about the Seiko Prospex Divers SRPB49

What strap size does the Seiko Prospex Divers SRPB49 take?

The Seiko Prospex Divers SRPB49 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 Seiko Prospex Divers SRPB49 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 Seiko Prospex Divers SRPB49?

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 44 mm diver I go for a full-thickness strap, not a thin one.

Which strap do you recommend for the Seiko Prospex Divers SRPB49?

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.

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