Strap for Speedmaster Moonwatch Dark Side of the Moon Alinghi

The lug width is 21 mm. This measurement represents the distance between the inner edges of the case shoulders, where the strap runs through. It is a rare geometry, found in very few Omega models. Always verify this measurement with a digital caliper before ordering an aftermarket strap to avoid fitting issues.

Alligator remains the most elegant choice thanks to its fine grain and ability to develop a patina over time, creating a fascinating contrast with the black ceramic case. Vegetable-tanned calf represents the most sporty alternative, while FKM rubber straps are ideal for those using the watch in humid environments. The choice depends on primary use and personal aesthetic preferences.

The strap is replaced by removing the lugs (spring bar or screw, depending on the specific model) using a dedicated removal tool. Position the watch on a stable surface with adequate light, insert the tool into the lateral hole of the lug and gently rotate to extract the pin. Once the old strap is removed, insert the new one by aligning the holes and reinsert the lug until the safety click engages. If you are not experienced, it is advisable to contact an authorized service center.

Yes, provided it is compatible with the 21 mm lug width. Quality aftermarket straps, such as those made by Casati Milano, maintain high construction standards and guarantee complete compatibility with original Omega lugs. Always check the technical specifications of the strap before purchase and ensure it is made of noble materials if you wish to preserve the value of your watch.

Durability depends on the material and use. A quality alligator strap, with proper care, can last 5-7 years of daily use. Vegetable-tanned calf tends to wear out slightly faster (3-5 years) due to its softer grain. The most vulnerable part is the fold area under the lugs, where the leather undergoes the most tension. Rotating between multiple straps significantly extends overall durability and allows the leather to breathe between uses.