Strap for Terrasport I Chronograph Black / Strap

The lug width of the Terrasport M1-37-74-LB is 22 millimetres. This dimension is measured between the two pins that attach the strap to the case. It is essential to respect this measurement to ensure perfect compatibility and correct aesthetic harmony of the combination.

The Terrasport benefits from noble leather straps of substantial thickness, such as alligator or shell cordovan with vegetable tanning. These materials emphasise the engineering purity of the watch, developing natural patina over time. Alternatively, a durable NATO strap offers practicality and sporting character befitting the watch's technical instrument nature.

To change the strap, obtain a spring bar tool (an implement with a bifurcated tip). Remove the current lugs by gently pushing inward to compress the internal spring, then slide the pin out from the seats on the case. Insert the new strap by aligning the pins and release the compression. A simple operation, performable at home with care.

Yes, any strap with a 22mm lug width is compatible with the Terrasport M1-37-74-LB. This dimension is standard among mid-to-high-range sports chronographs. Conversely, straps with different lug widths (20mm, 24mm) will not fit the case seats.

A quality leather strap (alligator, shell cordovan with vegetable tanning) develops commendable patina for 3-5 years of regular use before requiring replacement. Longevity depends on usage, climate and maintenance. Noble materials such as shell cordovan often exceed 5 years, transforming aesthetically. Standard leather straps typically last 2-3 years.