Strap for Seastar 1000 Powermatic 80 40 Stainless Steel / Grey / Bracelet

The lug width of the Tissot Seastar T120.807.11.051.00 is 20mm. This measurement represents the distance between the two lugs that protrude from the sides of the case. To verify compatibility with an aftermarket strap, measure with a digital calliper from the outer edge of one lug to the inner edge of the other: the value must be exactly 20mm.

The ideal strap depends on your intended use. To maintain the sports-professional identity, we recommend alligator leather with natural patina or vegetable-tanned shell cordovan, which develop character over time. For genuine water use, a black rubber strap offers complete water resistance. Canvas NATO in grey or navy blue adds versatility without betraying the watch's utility spirit. MilanoStraps offers all compatible 20mm variants.

The strap is replaced by removing the two spring bars that hold it to the case lugs. Use a dedicated spring bar tool to apply pressure from the inner side of the bar, release the spring, and extract it. Once the lugs are free, slide off the old strap and position the new one. Reinsert the spring bars, ensuring they click perfectly into their seats. The operation takes a few minutes and requires only a spring bar tool.

Yes, the Tissot Seastar T120.807.11.051.00 is fully compatible with 20mm aftermarket straps. The key is choosing pieces made from premium materials (certified alligator, shell cordovan, vulcanised marine-grade rubber) and robust stainless steel spring bars. MilanoStraps artisanal straps in the 20mm size are tested for compatibility and durability, ensuring an aesthetic transformation without functional compromise.

A premium leather strap (alligator, shell cordovan, tanned calf) worn regularly on a 40mm watch like the Seastar typically lasts 3-5 years before requiring replacement. Longevity depends on use, exposure to moisture and heat, and maintenance. Vegetable-tanned straps age beautifully, developing patina and increasingly refined texture. With minimal care (drying after rain, protection from excessive heat), you can significantly extend the strap's life, transforming wear into beauty.