Strap for Altitude Officier Classic

The lug width of the 101OEIY model is 20 millimetres. This dimension is engineered to maintain visual proportions of the 41mm case to the wrist. To verify, use a digital calliper and measure at the base of the lug: a reading between 19.8 and 20.2mm confirms compatibility with standard 20mm straps.

Structured alligator leather with pronounced grain creates the finest aesthetic dialogue with the titanium case. Alternatively, vegetable-tanned calf leather evolves over time in harmony with the titanium's natural patina. For intensive or aquatic use, a heavyweight cotton NATO or vulcanised rubber maintains functional integrity whilst preserving the model's sporty design language.

The model employs a standard dual-stem spring bar securing the strap to the lugs. Position the watch on a soft cushion, locate the small hole at the lug extremity, insert a spring bar removal tool (calibrated pin or dedicated implement) into the hole and apply gentle lateral pressure to release the spring bar outward. Once extracted, remove the old strap and insert the new one.

Yes, any strap with a 20mm lug width is compatible with the Altitude Officer 101OEIY, regardless of manufacturer. Ensure only that thickness does not exceed 3.5mm (including buckle) to avoid friction with the case. Verify also that length is sufficient to span the wrist: typically 75–80mm on the fixed end and 105–120mm on the mobile end.

A quality handcrafted leather strap lasts 3–5 years with moderate daily wear, extendable to 7–8 years if rotated with alternative straps. Longevity depends on tanning method: shell cordovan resists 8–10 years, vegetable-tanned calf 5–7 years, alligator 4–6 years. Exposure to perspiration, moisture and UV radiation accelerates ageing. Regular maintenance with odourless balm significantly extends useful life.