H. Moser & Cie · Endeavour

Strap for Endeavour Perpetual Moon Red Gold / Aventurine Concept

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter42 mm
Reference1801-1201
FamilyEndeavour
MovementH. Moser & Cie caliber HMC 801 hours, minutes, day / Night Indication | moonphase | power reserve indicator
Year2019
CaseRed Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Endeavour 1801-1201

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Endeavour 1801-1201, seen from the bench

The H. Moser & Cie Endeavour features the in-house caliber HMC 801 with hour and minute indications, moon phases and power reserve. The movement includes a day/night indicator that completes the functions of the dial. The case presents classic proportions according to the canons of the Swiss manufacture.

Frequently asked questions

What is the lug width of the H. Moser & Cie Endeavour 1801-1201?

The lug width (ansa width) of the 1801-1201 model is 20 millimetres. This measurement is calculated as the distance between the centres of the holes where the lugs attach to the case. It is essential to verify this specification before ordering a replacement strap, as an incorrect width will compromise both the aesthetics and wearability of the watch.

Which strap is most suitable for the H. Moser & Cie Endeavour 1801-1201?

For the Endeavour 1801-1201, we recommend a strap in alligator brown, vegetable-tanned calf, or shell cordovan. These materials enhance the minimalist philosophy of the model and dialogue elegantly with the rose gold case. For those seeking versatility, a nylon NATO strap or quality rubber represents a more sporty and functional alternative.

How do I change the strap on my H. Moser & Cie Endeavour 1801-1201?

The change requires an appropriate spring bar tool. Position the watch face down, gently insert the tool into one of the lugs, press the small metal lever towards the centre of the case to release the internal spring, then extract the pin. Repeat on the second lug. Insert the new strap by aligning the holes with the pins, press until you hear the locking click. If uncertain, entrust the task to an experienced watchmaker.

Can I use an aftermarket-compatible strap on my Endeavour 1801-1201?

Yes, any strap with a 20-millimetre lug width is compatible with your 1801-1201. Artisanal quality straps offer aesthetic and functional advantages over original straps: greater colour variety, premium materials such as alligator and shell cordovan, and customisation possibilities. Always verify that the total length is appropriate for your wrist circumference (typically 70-80 mm for the short end and 100-110 mm for the long end).

How long does a leather strap last on my Moser watch?

Durability depends on material and wear: quality vegetable-tanned calf resists 3-5 years with daily wear; alligator is more durable (5-7 years); shell cordovan lasts up to 8-10 years. Durability increases significantly if the strap is not worn daily. With proper maintenance (periodic cleaning, protection from excessive moisture), these periods can be extended. A well-constructed strap ages beautifully, developing a fascinating patina that tells the story of its use.

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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only