Omega · Speedmaster Moonwatch

Strap for Omega Speedmaster Moonwatch CK2915

Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width19 mm
Case diameter39 mm
ReferenceCK2915
FamilySpeedmaster Moonwatch
MovementOmega caliber 321 Small seconds, Hours, Minutes | Chronograph, Column wheel

Recommended spring bar

Spring bars Omega Speedmaster Seamaster 19mm

Technical match for lug width and diameter · lug 19 mm · Ø 1.8 mm

All Omega spring barsOpen →

Straps for the Speedmaster Moonwatch CK2915

Selected for the 19 mm lug width

All 19 mm straps →

The Speedmaster Moonwatch CK2915, seen from the bench

The Speedmaster Moonwatch CK2915 was introduced by Omega in 1957 as a sport chronograph. It features the manual-winding caliber 321 with column-wheel chronograph function, small seconds, and hour-minute indication. The 39mm stainless steel case has 19mm lugs.

Frequently asked questions

What is the lug width of the Omega Speedmaster Moonwatch CK2915?

The Omega Speedmaster Moonwatch CK2915 has a lug width of 19 millimeters. This width is specific to this original reference and it is important to measure it with precision using a digital caliper, as CK2915 lugs have a characteristic tapered shape. The depth of the holes varies between 3.5 and 4 millimeters.

Which strap is best suited for the Omega Speedmaster Moonwatch CK2915?

For the CK2915, an alligator in cognac or brown tones represents the most coherent choice with the original history of the watch. Alligator leather features a large grain texture that pairs perfectly with the vintage case design. Valid alternatives include vegetable-tanned calf or shell cordovan, which develop a fascinating patina over time.

How do you change the strap on an Omega Speedmaster Moonwatch?

To change the strap on a CK2915 Speedmaster, it is necessary to remove the lugs using a specific tool (spring bar tool) or by relying on a watchmaker. Insert the tool into the lateral hole of the lug, release the internal spring and extract the lug from the case. Insert the new strap into the seats, ensuring that the lugs are fully clicked into place. Always verify that there is no excessive play.

Can I use an aftermarket compatible strap on the CK2915?

Yes, any strap with a 19mm lug width is compatible with the CK2915. It is important to verify that the hole depth is between 3.5 and 4 millimeters and that the strap thickness does not exceed 4.5mm. Custom bespoke straps guarantee a perfect fit and construction quality that honors the historical importance of the watch.

How long does a leather strap last on an Omega Speedmaster Moonwatch?

The durability of a leather strap depends on the material and use. High-quality alligator or shell cordovan, with appropriate maintenance, lasts between 3 and 5 years of daily wear. Vegetable-tanned calf can last 2-3 years. Factors such as exposure to sweat, humidity and lack of protection from UV rays accelerate aging. Rotating between two straps significantly extends their lifespan.

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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