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Omega · Seamaster Diver 300M

Strap for Omega Seamaster Diver 300M 210.93.42.20.99.001

The Seamaster Diver 300M Master Co-Axial 42 Platinum Aston Martin Neiman Marcus takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

20mm
20 mm strapsAll Omega
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Lug width20 mm
Case diameter42 mm
Reference210.93.42.20.99.001 (aka: James Bond, 007, 21093422099001)
FamilySeamaster Diver 300M
MovementOmega caliber 8807 Hours, Minutes, Seconds | Chronometer, Co-Axial escapement
Year2019
CasePlatinum

Recommended spring bar

Spring bars Omega 20mm — 1.8mm diameter

Technical match for lug width and diameter · lug 20 mm · Ø 1.8 mm

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All Omega spring barsOpen →

Straps for the Seamaster Diver 300M 210.93.42.20.99.001

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

What I'm asked about the Omega Seamaster Diver 300M 210.93.42.20.99.001

What strap size does the Omega Seamaster Diver 300M 210.93.42.20.99.001 take?

The Omega Seamaster Diver 300M 210.93.42.20.99.001 needs 20 mm between the lugs, usually 16 mm at the buckle. It's the size I've been fitting on it for years.

Can the strap on the Omega Seamaster Diver 300M 210.93.42.20.99.001 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 Omega Seamaster Diver 300M 210.93.42.20.99.001?

Yes, in 20 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 42 mm diver I go for a full-thickness strap, not a thin one.

Which strap do you recommend for the Omega Seamaster Diver 300M 210.93.42.20.99.001?

Rubber if you wear it in the water; otherwise a 20 mm calf strap, full thickness. You'll find it ready in the 20 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

The Seamaster Diver 300M 210.93.42.20.99.001, seen from the bench

The Seamaster Diver 300M features the automatic 8807 caliber with co-axial escapement and chronometer certification. The case has 20mm lugs and offers water resistance up to 300 meters in depth. The movement indicates hours, minutes and seconds with the precision guaranteed by Omega's co-axial technology.

Frequently asked questions

What is the best strap for the Seamaster Diver 300M in platinum?

For solid platinum, we recommend black alligator or cognac brown calf: both enhance the luminosity of the precious metal and develop an elegant patina over time. For underwater use, FKM rubber or ballistic NATO guarantee practicality without compromising on durability and case protection.

Is there an aftermarket strap compatible with the 210.93.42.20.99.001?

Yes, any 20 mm strap is compatible with the Seamaster Diver 300M. Milanostraps offers a selection of handcrafted leather straps (alligator, calf, shell cordovan) and fabric (NATO), all in 20 mm size, customizable and with warranty. The Casati Milano atelier also creates bespoke solutions with personal consultation.

How long does a leather strap last on a Seamaster Diver 300M?

A premium leather strap (alligator, calf) typically lasts 3-5 years with daily use, depending on cleaning frequency and environmental conditions. Prolonged exposure to salt water or chlorine accelerates wear. The 18-month warranty offered by Casati Milano covers manufacturing defects; replacement after natural wear requires purchase of a new strap.

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