Strap for Benu Tourbillon Skylife

The lug width of the Moritz Grossmann Benu MG-001173 is 18mm. This measurement represents the distance between the internal shoulders of the spring bar and must be measured with millimetre precision using a digital calliper. The 18mm width allows you to select from a wide range of aftermarket straps without compromising on quality or availability.

For the Benu MG-001173 in white gold, the ideal strap is black or dark brown alligator, which creates an elegant contrast with the cold luminosity of the metal. Alternatively, a vegetable-tanned calf leather in cognac brown offers versatility and develops a rich patina over time. Heavy-weight NATO textile or FKM rubber straps remain excellent options for sport or professional use.

To change the strap, you will need a spring bar tool. Position the watch with the caseback facing upwards, insert the flat tip of the spring bar tool beneath the lateral spring, push gently to release the pin and slide off the old strap. Insert the new strap by aligning the holes with the lug pins, then press the spring until you hear a click. Verify that the strap is securely fastened before wearing the watch.

Yes, the Benu MG-001173 is fully compatible with 18mm aftermarket straps. The standardisation of lug width allows you to select from a vast range of straps in alligator, calf leather, shell cordovan, technical textile and rubber. We recommend always verifying that the strap features thickness and structural rigidity consistent with the case proportions to maintain overall visual balance.

A quality leather strap (alligator or vegetable-tanned calf) subject to moderate daily use has an average lifespan of 3–5 years. Factors such as ambient humidity, direct sun exposure, frequency of use and maintenance care (periodic cleaning, treatment with natural wax) significantly influence longevity. Vegetable-tanned leather tends to age better than industrial methods, developing a fascinating patina. FKM rubber straps have equivalent or superior lifespan with minimal maintenance.