Strap for Artix GT Day Date Stainless Steel - Ceramic / Black

The lug width (distance between lugs) of the Oris Artix GT 01 735 7662 4424-07 4 21 26FC is precisely 21mm. This measurement refers to the internal space between the two lug horns on the case, where the strap lugs are installed. Do not confuse this with other measurements: the case diameter is 42mm, which is completely different. To verify compatibility, use a digital calliper or ruler, positioning the measurement exactly between the internal lug horns.

There is no single 'best' choice, but rather choices that are coherent with usage and aesthetics. An alligator strap with vegetable tanning creates fascinating contrast with the ceramic case and amplifies authority. Black calf leather with matte finish expresses technical rigour. A NATO strap in robust canvas (grey, navy blue) preserves the tool-watch nature with maximum versatility. An FKM rubber strap is ideal for humid contexts or high-practicality scenarios. Casati Milano personalises each choice based on your wrist and patina preferences.

Strap replacement requires two essential tools: a spring bar tool (extractor) and a well-lit, flat work surface. Position yourself beneath a lug and insert the flat tip of the spring bar tool into the lateral hole of the spring, pushing gently to release it. Repeat on both sides. The strap will come out easily. To install the new 21mm strap, align the lugs with the lug horns, insert the spring starting from one side, then secure the other side using the same technique. Do not force: the movement must be fluid and symmetrical.

No. The 21mm lug width is highly specific. Although some brands use 20mm or 22mm standards, a 21mm strap will function correctly only on watches with that exact internal measurement between lug horns. Always verify compatibility before purchasing. If you own multiple watches with 21mm lugs (Oris, Longines, IWC, etc.), you can share straps between them. Casati Milano offers a dedicated collection of 21mm straps to ensure correct universality.

Durability depends on material, tanning method, and usage patterns. A quality artisan alligator strap with vegetable tanning lasts on average 3-5 years with daily wear, developing a fascinating patina over time. Premium calf leather resists 2-4 years. A NATO canvas strap exceeds 5 years if properly maintained. An FKM rubber strap maintains elasticity for 4-6 years. Regular maintenance—gentle cleaning, leather conditioning every 6-8 months with natural creams—significantly extends strap lifespan. Casati Milano recommends maintaining multiple straps to distribute wear and maximise the longevity of each one.