Strap for HM Perpetual Moon

The lug width is 20mm. This specification represents the distance between the two metal pins (lugs) that anchor the strap to the case. The pins have a standard diameter of 1.8mm, compatible with quality aftermarket straps.

For this 42mm rose gold case, we recommend cognac alligator on vegetable tanning, which enhances the gold's warmth without visual competition. A classic alternative is medium brown vegetable-tanned calf leather, offering gravitas and versatility. Heavy NATO straps work well for a more narrative character.

You will need a spring bar tool. Place the watch on a stable surface, insert the tool's sharp end into the small slot under the lug pin, gently lift until the pin retracts, and slide out the old strap. Repeat on the other side. To install the new strap, align the holes with the lugs and push the pin until it clicks securely into position.

Yes. The watch features standard 20mm lugs and 1.8mm diameter pins. Any quality strap meeting these specifications will be compatible. We recommend selecting straps crafted from noble materials (vegetable-tanned leather, alligator, vulcanised rubber) to maintain the aesthetic balance of this luxury timepiece.

A high-quality leather strap (alligator or premium vegetable-tanned calf) typically lasts 3–5 years with moderate daily use. Longevity depends on sun exposure, humidity, frequency of wear, and care practices. Shell cordovan straps, being denser, may last 5–7 years. It is advisable to rotate straps to distribute wear and allow the leather to dry completely between uses.