Strap for Chronograph Automatic Open Date

The Montblanc Nicolas Rieussec 104981 features a lug width of 20 millimetres. This measurement is the distance between the case lugs and is essential for purchasing compatible straps. Measure the diameter with a calliper at the widest expansion point of the lug to verify accuracy.

For the Nicolas Rieussec 104981, we recommend alligator straps for formal contexts (chocolate brown, black, burgundy), vegetable-tanned calf for elegant daily wear, grey or navy NATO straps for a sports aesthetic, and matte black rubber for intensive activities. Your choice depends on your lifestyle and frequency of chronograph use.

Strap replacement on the 104981 is performed via removable spring bars positioned at the case lugs. Use a dedicated spring bar tool to gently compress the elastic pin, extracting the old strap. Insert the new 20mm strap, ensuring the spring bar clicks fully into position. If inexperienced, consult a professional watchmaker.

Yes, the Nicolas Rieussec 104981 accepts all 20mm lug width straps. Whilst Montblanc manufactures proprietary straps, high-quality artisanal aftermarket models in alligator, calf, NATO and rubber adapt perfectly to the original spring bars, allowing you to personalise the timepiece to your taste.

A quality leather strap (alligator, vegetable-tanned calf or shell cordovan) typically lasts 3–5 years with moderate daily wear. Longevity depends on frequency of use, humidity exposure, perspiration and UV radiation. Rubber or NATO straps offer greater durability (5–8 years), whilst natural materials develop an appreciated aged patina prized by enthusiasts.