Strap for Seastar 1000 Chronograph Quartz 45.5 Stainless Steel / Blue / Bracelet

The lug width of the Tissot Seastar T120.417.11.041.03 is 22mm. This measurement represents the distance between the two lugs on the case and is essential for ensuring compatibility with any aftermarket strap. To measure it accurately, position a digital calliper between the inner bases of the lugs with the watch disassembled.

We recommend a vegetable-tanned leather strap in vintage brown Tuscan leather. This material combines elegance with functionality: it develops natural patina over time, resists moisture and adapts perfectly to the proportions of this 45.50mm chronograph. Alternatively, a NATO strap in canvas offers maximum versatility and practicality for frequent water use.

Gently remove the spring bar from the lugs using a dedicated strap removal tool. On this model, the spring bar is a standard 22mm pressure fit. Insert the new strap into the lugs and reinsert the spring bar, ensuring it is properly seated on both sides. The strap should have no vertical play. If you lack experience, consult a professional watchmaker.

Any strap with a 22mm lug width is compatible with the Seastar T120.417.11.041.03. You have complete choice between leather (calf, alligator, shell cordovan), NATO, FKM rubber and synthetic materials. Milano Straps offers a comprehensive collection of 22mm straps tested for compatibility and durability on sports watches in this category.

A quality watchmaking leather strap (Tuscan leather, vegetable-tanned calf) typically lasts 3-5 years on a daily-worn sports watch like the Seastar T120.417.11.041.03. Lifespan depends on moisture exposure, maintenance frequency and protective treatment. If worn occasionally or with protection from sweat and water, longevity can extend to 7-10 years.