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

The lug width of the Tissot Seastar T120.417.11.051.00 is 22mm. This dimension allows you to match aftermarket straps specifically designed for this width. To verify compatibility, extract the original strap and measure the distance between the two spring bars: it must correspond to 22mm with a tolerance of ±0.2mm.

The choice depends on your intended use. For elegance and natural patina over time, we recommend alligator with vegetable tanning in cognac or brown shades. For frequent diving and salt-water resistance, Italian chromium-tanned calf is ideal. For swimming and snorkelling, NATO straps in tech-fabric polyamide guarantee total waterproofness and quick drying. FKM rubber is the solution for chlorinated pools.

Use a spring bar removal tool. Insert the thin tip of the tool under the spring bar and apply downward pressure until the bar is released from the case slot. Repeat for both sides. Insert the new bars into the 22mm strap, align with the lugs and push until they click into place. Verify the locking by gently pulling the strap from the ends.

Yes, provided the lug width is precisely 22mm. Milan Straps 22mm straps are designed according to ISO 3506 standards and guarantee perfect fit on the original T120.417.11.051.00 spring bars. No modification to the case or bars is necessary. We recommend verifying that the bars are effectively removable from their seat before proceeding.

With vegetable tanning and moderate use (2-3 times weekly), durability is 5-7 years. The leather will develop natural patina in 1-2 years, increasing aesthetic appeal. With heavy use (frequent diving) and salt water, lifespan reduces to 3-4 years. FKM rubber lasts 8-10 years even under constant chemical stress. Chromium-tanned calf resists 6-8 years in difficult aquatic conditions.