Strap for Constellation Master Chronometer 41 Stainless Steel - Ceramic / Green Meteorite

The lug width is 18mm. This measurement is specific to the 131.30.41.21.99.002 model and represents the internal distance between the two lug shoulders. A compatible strap must have exactly 18mm width at the ends to fit correctly in the reference.

For the grey meteorite dial we recommend cognac brown alligator (historic luxury), black calf (modernity), or brown vegetable-tanned leather (authentic aging). The strap color should dialogue with the cool grey of the meteorite, avoiding colors that compete visually with the extraterrestrial dial.

Obtain a spring bar tool (small format tool). Position the watch on a soft surface face-up. Insert the tool tip into the small hole of the lug, gently lift the spring pin and slide the strap out. Repeat on the other side. Install the new 18mm strap by inserting one end first, then the other, ensuring the spring pin clicks into place. This operation requires caution: a scratch on the ceramic case is permanent.

Yes, all straps with 18mm lug width are compatible with the 131.30.41.21.99.002, regardless of brand. It is essential to verify the exact width with the seller. 17mm or 20mm straps will not fit correctly and may damage the lug pins.

A quality alligator or calf, with moderate use and regular maintenance (monthly cleaning, semi-annual conditioning), lasts 4-6 years before replacement is needed for natural wear. In humid environments or with frequent perspiration, durability reduces to 2-3 years. Vegetable-tanned leather tends to craze slightly with age, a natural aesthetic phenomenon that does not compromise functionality.