Tissot
Seastar T120.410.33.051.00— lug 20mm

The Tissot Seastar T120.410.33.051.00 features a 20 mm lug width. This measurement refers to the distance between the inner lug tubes of the case, not the overall diameter. To verify, position a calliper perpendicular to the lugs.

Selection depends on intended use. For daily elegance: vegetable-tanned calf leather in brown or tobacco tones. For water resistance and sport: 20 mm NATO strap in cordura or nylon, or FKM rubber. For formal occasions: natural alligator with granulated texture. All must be compatible with the 20 mm lug width.

Remove the spring bars from the old strap by applying pressure at the lug tubes (typically using a spring bar tool). Insert the new strap into the lug tubes, ensuring the spring bar pins lock completely into the holes. Verify the strap sits flush and evenly on both sides before wearing.

Yes, provided the lug width is precisely 20 mm and the strap meets correct construction standards. Bespoke leather straps guarantee superior compatibility and durability compared to generic industrial models. Always confirm the strap is specifically sized for 20 mm lugs.

A quality leather strap with vegetable tanning lasts 18-36 months with daily wear and proper maintenance. Humidity and water exposure reduce longevity: for humid environments or frequent water exposure, choose NATO or rubber instead. Natural patina enhances character over time, but structural deterioration requires periodic replacement.