Strap for Diving Watch U1 S

The Sinn 1010.020 features a 22mm lug width, measured between the two metal lugs protruding from the case. To verify the measurement, use a digital calliper positioned between the spring bar attachment points on the caseback.

There is no single 'best' strap, but functional choices according to intended use. For deep diving, vulcanised rubber or military NATO ensure maximum water resistance and rapid drying. For daily wear, vegetable-tanned alligator integrates the instrument character with noble ageing. For formal settings, Italian regenerated calf offers evolving patina and comfort.

Position the watch on a flat surface. Using a spring bar tool or small flat-head screwdriver, apply gentle vertical pressure inward on the terminal lugs (one at a time), lifting the old strap away. Once the spring bars are released, align the new strap's holes with the lug openings and press the bars into place. Verify the strap is securely seated.

Any quality 22mm strap is compatible with the 1010.020. Milano Straps offers a curated selection of straps in alligator, calf, military NATO, and rubber specifically tailored for this lug width. Avoid budget straps with weak spring bars: the 1010's engineering deserves reliable hardware.

Durability depends on tanning method and frequency of use. A vegetable-tanned alligator strap worn occasionally lasts 5–8 years before reconditioning. Frequent exposure to fresh or saltwater reduces lifespan to 3–4 years. Rubber, by contrast, is virtually indestructible but may become brittle after 10–15 years of intense sunlight exposure.