Tissot · Seastar

Strap for Seastar 1000 Powermatic 80 40 PVD / Grey / 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
ReferenceT120.807.33.051.00 (aka: T1208073305100)
FamilySeastar
MovementETA caliber C07.111 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 T120.807.33.051.00 (aka: T1208073305100)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Seastar T120.807.33.051.00 (aka: T1208073305100), seen from the bench

The Tissot Seastar 1000 model T120.807.33.051.00 features a 40mm brushed stainless steel case with 300 meters water resistance, powered by the ETA C07.111 quartz movement. The 20mm lug width accommodates various strap options, from alligator leather to rubber. This timepiece represents the direct evolution of Tissot's diving watch DNA established since the 1960s, combining robust proportions with refined construction details.

Frequently asked questions

What is the lug width of the Tissot Seastar T120.807.33.051.00?

The lug width of the Tissot Seastar T120.807.33.051.00 is 20mm. This is the internal distance between the two spring bar holes on the case. To verify it accurately, measure with a digital calliper between the attachment points: the correct distance should be 20±0.2mm.

Which strap do you recommend for the Tissot Seastar T120.807.33.051.00?

For the Seastar T120.807.33.051.00, we recommend three choices depending on your lifestyle: (1) alligator in black or cognac for those seeking elegance without compromising durability; (2) rubber or rubber-textile for those actively wearing the watch in marine environments; (3) cotton-heavy NATO for daily versatility. Your choice should reflect your actual usage pattern rather than aesthetic convention.

How do you change the strap on the Tissot Seastar T120.807.33.051.00?

Strap replacement is straightforward: use a spring bar tool to compress the elastic pin inward, releasing one end of the strap. Repeat the procedure in reverse with your new strap, ensuring the lug width sits flush in the attachment slots. Do not force: the spring bar should click into position naturally.

Are aftermarket straps compatible with the Tissot Seastar T120.807.33.051.00?

Yes, provided the strap is manufactured for 20mm lug width. Our bespoke straps are hand-crafted precisely for this width and offer superior quality compared to OEM Tissot alternatives. Always verify that the width is exactly 20mm, not 19mm or 21mm.

What is the typical lifespan of a leather strap for the Tissot Seastar T120.807.33.051.00?

A high-quality leather strap (alligator or vegetable-tanned calf) typically lasts 3–5 years with daily use, excluding prolonged saltwater exposure or direct sunlight. With regular maintenance (gentle cleaning, immediate drying after exposure), longevity increases significantly. Rubber straps generally withstand 2–3 years before showing age.

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