Omega · Seamaster Diver 300M

Strap for Seamaster Diver 300M Quartz 28 Yellow Gold / White / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter28 mm
Reference2182.20.00 (aka: 21822000)
FamilySeamaster Diver 300M
MovementOmega caliber 1424 hours, minutes, seconds | date | chronometer
CaseYellow Gold

Recommended spring bar

Spring bars Omega 20mm — 1.8mm diameter

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

All Omega spring barsOpen →

Straps for the Seamaster Diver 300M 2182.20.00 (aka: 21822000)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Seamaster Diver 300M 2182.20.00 (aka: 21822000), seen from the bench

The Seamaster Diver 300M reference 2182.20.00 is powered by the Omega 1424 caliber with hour, minute, second and date functions. The watch is certified as a chronometer and is water-resistant up to 300 meters. The movement guarantees timekeeping precision through the certified COSC regulation system.

Frequently asked questions

What is the exact lug width of the Omega Seamaster Diver 300M 2182.20.00?

The lug width of the Seamaster Diver 300M ref. 2182.20.00 is 20 millimetres. This width is standard for this model and must correspond exactly to ensure proper aesthetic integration between case and strap. You can verify it by measuring the distance between the two attachment lugs at the case extremities with a digital calliper.

What strap do you recommend for this 28mm yellow gold watch?

For the Seamaster Diver 300M 2182.20.00 in yellow gold we recommend alligator leather (cognac or palomino) to maximize aesthetic sophistication. Alternatively, vegetable-tanned calf leather develops patina over time, while shell cordovan offers intrinsic brilliance. To maintain its diving vocation, a technical rubber strap or blue NATO strap is perfect for sporty use.

How do you change the strap on the Seamaster Diver 300M without damaging the lugs?

Remove the two attachment pins using a spring bar tool (specific fork-shaped instrument), working gently from the rear of the case. Position the new 20mm strap at the extremities, align the pins and push until you hear a click. Avoid using a hammer: precision is essential to avoid scratching the gold or damaging the pins themselves.

Can I fit an aftermarket strap to my 2182.20.00 without losing value?

Absolutely yes. Quality artisanal aftermarket straps — particularly those made in Italy with alligator or shell cordovan — are appreciated by collectors as aesthetic and functional upgrades. It is important to preserve the original Omega strap in case of future sale. A custom personalised strap adds value to the ownership experience without compromising the integrity of the watch.

How long does an artisanal leather strap typically last on a diving watch?

A fine leather strap (alligator, shell cordovan, calf) typically lasts 3-5 years with daily use, up to 8-10 years with careful maintenance and seasonal rotation. For the Seamaster Diver 300M, we recommend not exposing the strap to prolonged water immersion; for water use, prefer a rubber or NATO strap. Periodic cleaning with a specific product significantly extends leather longevity.

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