Strap for Real Moon Joure

The CKRJ3344 features a lug width (ansa width) of 20mm. This measurement is the distance between the two lateral lugs of the case and is crucial for selecting a compatible strap. A 20mm lug width is standard for mid-sized watches and is widely adopted across both sports and classic timepiece collections.

The optimal choice depends on your intended use. For formal occasions, an alligator or vegetable-tanned calf leather strap enhances the watch's elegance and sophistication. For daily wear, a grey NATO in canvas offers versatility and practicality. For maximum durability and ease of maintenance, an FKM rubber strap is the technical solution. Always ensure your strap is precisely 20mm in width to guarantee perfect compatibility with your case.

Strap replacement requires a spring bar tool (strap removal pin). Carefully insert the flat tip into the small slot on the lateral lug pin to compress it, then extract the pin from its seat. Repeat on the opposite side. Once the old strap is removed, align the new strap's holes with the pins and press firmly until you hear a distinct click indicating secure locking. Ensure both pins are symmetrically secured before wearing.

Yes, provided the strap is certified to be exactly 20mm in lug width. A quality strap from specialised manufacturers—such as alligator, calf leather, or NATO options—is fully compatible with your van der Klaauw timepiece. Always verify the lug width is precisely 20mm to ensure proper fit on the pins without lateral play or excessive movement.

A high-quality leather strap made from vegetable-tanned material, such as alligator or calf leather, typically lasts 3-5 years with daily wear and 5-10 years with occasional use or when rotated with alternative straps. Longevity depends on ambient humidity, frequency of use, and proper maintenance. Avoid direct heat exposure and clean periodically with a damp cloth. The natural patina that develops over time is a prized characteristic among connoisseurs, not a flaw.