Strap for Terrasport III Black / Strap

The lug width of the Mühle Glashütte Terrasport M1-37-84-LB is 18mm. This measurement is taken precisely between the two lugs (the metal pins) that attach the strap to the watch case. It is essential to verify this measurement before purchasing an aftermarket strap, as even minor discrepancies will prevent proper installation.

The choice of strap depends on the intended use. For formal or professional wear, we recommend a satin alligator strap or a vegetable-tanned calf leather in neutral tones such as taupe or black. For sports or daily wear, a vulcanised rubber strap or a ballistic nylon NATO strap offer greater practicality and durability. Alligator remains the most versatile choice, as it develops a rich patina over time without sacrificing elegance.

The strap is changed by removing the pins that secure it to the lugs. You will need a dedicated tool called a spring bar tool or pin remover, available inexpensively online or from jewellers. Insert the fine tip of the tool into the small hole beneath the lug, apply gentle pressure and the pin will come free. After inserting the new strap, reinstall the pins using the same tool. If you are inexperienced, a professional watchmaker will complete this operation in a few minutes.

Yes, numerous aftermarket straps are compatible with 18mm lug width. Milano Straps offers a specific collection of straps in alligator, calf, rubber and NATO, all manufactured to this lug width specification. Compatibility is guaranteed because the pins are calibrated precisely to 18mm. Before purchasing, always verify that the supplier explicitly specifies this measurement to avoid errors.

The lifespan of a leather strap depends on frequency of use and care. A high-quality alligator or calf leather strap, worn daily, typically lasts 3-5 years before requiring replacement. With occasional use, the lifespan extends to 7-10 years. The leather will gradually wear at the fold points and areas of repeated contact with the wrist. Regular maintenance with specialist leather care products (gentle cleaning, protection with natural creams) can significantly extend the strap's service life.