Strap for 150th Anniversary Automatic Small Seconds

The lug width of the Tissot Heritage T66.1.711.31 is 20 mm. This measurement refers to the distance between the attachment pins positioned at 12 and 6 o'clock on the case. It is essential to verify this measurement with a digital calliper before purchasing a strap, as even a 1 mm difference can compromise the fit.

For the T66.1.711.31, we recommend three primary options: alligator in cognac or black for formal elegance, vegetable-tanned calf leather in warm brown for sophisticated daily wear, or nylon NATO in blue with red detailing for a vintage sports aesthetic. Your choice depends on intended usage and dial tone.

The process requires specific tools: a two-prong spring bar tool to remove the attachment pins. Position the watch on soft cloth, insert the tool into the space between lug and strap to compress the pin, remove the old strap, and repeat on the opposite side. Install the new strap by inserting the pins on one side first, then compress the opposite side until it catches securely.

Yes, provided the lug width is exactly 20 mm. Quality aftermarket straps maintain precise tolerances and guarantee structural compatibility. Always verify the case marking on the strap itself or contact our team before purchase to clarify any fitting details.

A premium leather strap, treated with vegetable tanning, typically lasts 3-5 years with daily use, depending on sun exposure, humidity, and perspiration. Alligator tends to last longer due to denser fibres. Periodic maintenance—cleaning and conditioning—extends longevity. Synthetic and NATO materials offer superior durability in extreme conditions.