Strap for Seastar 1000 Powermatic 80 43 Stainless Steel / Blue / Bracelet

The lug width (also called strap width) of the Tissot Seastar T120.407.11.041.00 is 21 millimetres. This dimension is standard for 43mm tool watches and ensures balanced proportions between the case and strap. Always verify that any strap you wish to mount has the lateral pins exactly 21mm apart.

It depends on your primary use. For discreet elegance: alligator in antique grey or vegetable-tanned calf in dark brown. For guaranteed sportiness: NATO in black or grey tessuti. For frequent water activities: FKM rubber, which resists saltwater and dries rapidly. All 21mm straps in our collection are compatible with the lugs of this model.

The Seastar T120.407.11.041.00 uses removable spring bars (perni rimovibili). With a dedicated spring bar tool, press the lateral pin inward, extract the pin, remove the old strap, and insert the new one by aligning the lug holes. If you do not possess the tool, consult an authorised watchmaker: the service requires only minutes. Atelier Casati Milano offers on-appointment assistance.

Yes, provided they are 21-millimetre straps. All our straps are artisanal, crafted in premium leather or technical tessuti, and guarantee complete compatibility with the Seastar T120.407.11.041.00. We recommend verifying the leather thickness (typically 1.4–1.6mm) for precise fitting into the ceramic lugs.

The lifespan of a calf or alligator strap depends on usage and maintenance. With regular care (soft-cloth cleaning, protection from excessive humidity), an artisanal strap lasts 3–5 years of daily wear. Vegetable-tanned calf develops a natural patina that increases aesthetic appeal but reduces resistance to liquids: avoid prolonged contact with perspiration and water. For the Seastar, which is waterproof to 300 metres, we recommend rotating multiple straps to extend service life.