Strap for Seastar 1000 Powermatic 80 43 Rose Gold / Gradient Blue

The lug width of the Tissot Seastar T120.407.37.041.00 is 21mm. This measurement must be verified using a calliper positioned perpendicularly on the internal seat of the spring bar. Incorrect tolerance results in either mounting impossibility or dangerous strap play.

For the Tissot Seastar T120.407.37.041.00, three solutions are recommended: (1) vegetable-tanned alligator for everyday elegance; (2) shell cordovan for those desiring natural patina evolution over time; (3) FKM rubber or NATO for genuine diving contexts. Choice depends on prevalent usage.

Strap replacement on the Seastar T120.407.37.041.00 is performed via spring bars located on the reverse of the lugs. Using a spring bar tool, gently push the spring towards the centre to release the pin. Once the old strap is removed, insert the new one by aligning the pins to the lateral seats, ensuring the spring clicks into position. Never force the mechanism.

Any strap with a 21mm lug width is compatible with the Tissot Seastar T120.407.37.041.00. It is essential to verify the internal width (not external) with a calliper before purchase. Milanese artisanal straps allow customisation of width, length, and buckle type for perfect fit.

Leather strap longevity depends on tanning quality and usage pattern. An artisanal vegetable-tanned alligator maintains structural and visual performance for 3–4 years with daily use. Exposure to chlorine, salt water, and UV radiation accelerates ageing. For frequent diving, synthetic materials (rubber, NATO) guarantee 5–7 years of intensive use.