Strap for Seastar 1000 Automatic

The lug width of the Tissot Seastar T066.407.17.047.00 is 19mm, measured from the outer centre of one spring bar to the outer centre of the other. This dimension is specific to this model and ensures geometric alignment with the 42mm tonneau case. Always verify the measurement with a digital calliper before purchasing an aftermarket strap.

The ideal strap depends on intended use. For classical elegance, we recommend alligator with vegetable tanning in dark tones or burgundy shell cordovan. For active marine use, a vulcanised FKM rubber strap ensures water-resistance and durability. For daily versatility, a military-cotton NATO textile offers practicality and rapid exchange.

Changing the Seastar strap requires a dedicated spring bar removal tool. Position the watch on a stable surface, locate the minute holes at the case extremities where the spring bars protrude, insert the tool tip and gently lever to free the bar. Repeat on the opposite side. Install the new strap by reversing the procedure, ensuring that the spring bars lock fully into their seats.

Yes, 19mm aftermarket straps are fully compatible, provided they are specifically constructed for this lug width. We recommend verifying that the strap is accompanied by dimensional certification and that the lugs are sufficiently wide to avoid chafing against the case. Specialised strap manufacturers guarantee construction precision.

A quality leather strap (alligator or shell cordovan), if rotated with a second strap and protected from prolonged direct sunlight exposure, can last 3-5 years before requiring replacement. Natural ageing of leather involves progressive hardening. Periodic washing with lukewarm water and neutral soap, followed by gentle drying, extends the strap's useful life.