Tissot · Seastar
Strap for Seastar 1000 Chronograph Quartz 45.5 Bronze / Black / Rubber
Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Seastar T120.417.37.051.01
Selected for the 22 mm lug width · workshop selection
Recycled Nylon Military Strap — Grey with Red Stitching€52
Light Blue Recycled Military Strap with Red Stitching€52
Eco Recycled Nylon Military NATO Strap — Green with Green Stitching€52
Recycled Nylon Military NATO Strap — Red and Black Edges€52
Eco-Friendly Recycled Nylon Military NATO Strap — Green with Orange Edges€52
The Seastar T120.417.37.051.01, seen from the bench
Frequently asked questions
What is the lug width of the Tissot Seastar T120.417.37.051.01?
The Tissot Seastar T120.417.37.051.01 features a <a href="/pages/termine-glossario/misura-ansa">lug width</a> of exactly 22mm. This dimension is determined by the proportion between the case diameter (45.50mm) and the geometry of the stainless steel lugs. To verify strap compatibility, measure the distance between the two lugs using a digital caliper.
What is the best strap for the Tissot Seastar T120.417.37.051.01?
Selection depends on intended use: for professional marine environments, FKM rubber provides maximum durability and grip when wet; for formal elegance, <a href="/pages/termine-glossario/alligatore">alligator</a> brown or black with a <a href="/pages/termine-glossario/deployante">deployante</a> buckle ensures stable patina; for sports versatility, NATO in recycled yarn combines sustainability and ease of replacement. <a href="/pages/termine-glossario/shell-cordovan">Shell cordovan</a> from vegetable tanning represents the historical compromise: naturally water-resistant and develops organic patina over time.
How do I change the strap on the Tissot Seastar T120.417.37.051.01?
The process is straightforward: you need a spring bar remover (dedicated tool) to extract the elastic pin from the lugs. Position the device in the pin seat and gently push outward, sliding the strap from the lug shoulder. Repeat on both sides. Installation of the new strap follows the reverse process. Note: the 22mm <a href="/pages/termine-glossario/misura-ansa">lug width</a> requires straps calibrated to this exact measure to avoid gaps or excessive tension.
Is the Tissot Seastar T120.417.37.051.01 compatible with aftermarket straps?
Yes, entirely. All straps with a <a href="/pages/termine-glossario/misura-ansa">lug width</a> of 22mm are compatible with the T120. Aftermarket availability is extensive: Italian vegetable-tanned leather, NATO ripstop, technical rubber, certified <a href="/pages/termine-glossario/alligatore">alligator</a>. Always verify width with a caliper before purchase. On milanostraps.it, a dedicated 22mm collection is available with <a href="/pages/termine-glossario/deployante">deployante</a> and rollup buckle options.
How long does a leather strap last on the Tissot Seastar T120.417.37.051.01?
Durability depends on tanning method and usage. Italian vegetable-tanned leather (alligator, calf, <a href="/pages/termine-glossario/shell-cordovan">shell cordovan</a>) typically lasts 3–5 years with regular use if kept dry after immersion. Vegetable-tanned leather is naturally hydrophobic but not sealed like synthetic rubber: rapid drying after saltwater contact extends service life. NATO in recycled yarn lasts 2–3 years under identical use conditions. FKM rubber exceeds 5 years even in extreme conditions, though periodic rinsing prevents salt accumulation in the texture's microcrevices.
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.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
