Strap for Seastar 1000 Chronograph Quartz 45.5 Stainless Steel / Gradient Blue / Mesh

The lug width (ansa width) of the Tissot Seastar T120.417.11.041.02 is precisely 22mm. This measurement is taken between the inner ends of both lugs where the spring bars are inserted. Do not confuse this with the case diameter (45.50mm): only the 22mm lug width determines compatibility with aftermarket straps.

The Tissot Seastar, being a chronographic diver, pairs excellently with both leather straps (alligator, calf, or shell cordovan in vegetable tanning) and technical straps (premium NATO fabric or FKM rubber). For daily formal wear, ebony alligator is recommended; for salt water or diving, FKM rubber is ideal. Recycled plastic NATO straps offer particularly authentic aesthetic-functional balance on this model.

Strap change requires extraction of the spring bars (horizontal pins that secure the strap to the lugs). Use a dedicated spring bar remover or thin flat tool to gently push one of the small lateral buttons on the pins, extracting the old strap. Insert the new 22mm strap pins whilst keeping the spring mechanism compressed until complete engagement. Never force the pins: the system is designed for fluid, reversible movements.

Yes, any strap with a 22mm lug width is compatible with the Tissot Seastar T120.417.11.041.02, provided the internal spring bars have the same diameter (typically 1.8mm). Milano Straps certifies compatibility of all 22mm collection straps with this Tissot model. Always verify that the supplier clearly specifies 'lug width 22mm'.

A quality leather strap (alligator or cordovan with vegetable tanning) subjected to daily use maintains structural and aesthetic integrity for 18–36 months. Rubber and NATO fabric last longer (36–48 months) as they are not subject to drying. Controlled ageing of leather—patina, light cosmetic creasing—represents a desirable characteristic. Store the strap in non-excessively dry environments and apply light beeswax conditioning every six months to extend lifespan.