Strap for Seastar 1000 Quartz Chronograph PVD / Black / Bracelet

The lug width of the Tissot Seastar T120.217.33.061.00 is 20mm. This measurement is precise and represents the distance between the two spring bars inside the case. A 20mm strap will fit perfectly into the Tissot lug slots without play or wobbling.

It depends on intended use. For formal settings, we recommend vegetable-tanned alligator or calf leather in brown or blue tones. For aquatic or sporting scenarios, a heavyweight canvas NATO or natural vulcanized rubber are the technical choices. The Seastar, being a dive watch with chronograph complication, performs equally well in refined leather or functional fabrics.

Position the watch caseback-up on a flat surface. Locate the two spring bars (small metal springs) on each side of the case. Using a plastic bracelet tool or spring bar tool, gently press inward on one spring bar to create clearance, then remove the old strap. Repeat on the opposite side. Insert the new 20mm strap by aligning its holes with the pins and carefully releasing the spring bars into place.

Yes, provided they feature a 20mm lug width. Artisanal straps in leather, NATO, and rubber meeting this specification integrate seamlessly. Ensure the strap's holes align precisely with your spring bar diameters and that strap thickness permits clean closure without tension on a deployante buckle.

A quality leather strap (alligator or vegetable-tanned calf) typically lasts 3–5 years with daily wear, extending to 7–10 years with rotation among multiple straps. Longevity is influenced by sun exposure, perspiration, and humidity. Visible patina and crease lines are normal ageing marks. When a strap begins fraying at edges or fracturing at stress points, replacement is warranted.