Tissot · Seastar

Strap for Seastar 1000 Quartz 40 PVD / Black / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
ReferenceT120.410.33.051.00
FamilySeastar
MovementETA caliber F06.412 Hours, Minutes, Seconds | Date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Seastar T120.410.33.051.00

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

Frequently asked questions

What is the lug width of the Tissot Seastar T120.410.33.051.00?

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.

What is the best strap for the Tissot Seastar T120.410.33.051.00?

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.

How do I change the strap on my Tissot Seastar T120.410.33.051.00?

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.

Can I use an aftermarket strap with the Tissot Seastar T120.410.33.051.00?

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.

How long does a leather strap last on the Tissot Seastar T120.410.33.051.00?

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.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only