Nomos Glashütte
Metro 1106— lug 17mm

The Nomos Glashütte Metro 1106 features a lug width of 17 millimetres. This measurement, expressed in millimetres, indicates the distance between the two internal points of the lugs—the lateral terminations of the case where the strap attaches. To verify strap compatibility, measure this width precisely using a digital calliper or millimetre ruler. A strap with lug width narrower than 17mm will leave gaps; one wider than 17mm cannot be inserted without mechanical stress on the case.

For the Metro 1106, alligator leather represents the most elegant solution: its natural texture with distinct barrels harmonises perfectly with the brushed stainless steel case and develops a fascinating patina over time. Vegetable-tanned calf leather offers a robust alternative with visible ageing characteristics. For everyday versatility, a NATO strap in cotton or silk provides practicality while remaining aesthetically consistent with the Bauhaus design principles. Structured FKM rubber delivers a modern, weather-resistant solution.

Strap replacement requires a specific tool: a spring bar remover or small flat-head screwdriver. Position the watch on a soft, stable surface. Locate the small spring beneath each lug that supports the strap, gently insert the tool under the spring until it releases from its housing. Remove the old strap and insert the new one, ensuring the spring repositions correctly. Verify the strap is firmly secured before wearing the watch.

Yes, aftermarket-compatible straps may absolutely be used, provided they strictly respect the 17-millimetre lug width specification. Straps crafted by specialist artisans often exhibit superior construction quality and materials compared to factory solutions. Verify that the strap has been manufactured with precise lugs and that the keeper loops are shaped correctly to accommodate the lug without excessive play. Well-executed aftermarket straps ensure longevity and complete personalisation of the watch.

The durability of a leather strap depends on multiple factors: the quality of the leather employed, the type of tanning (vegetable or synthetic), daily use, exposure to perspiration and sunlight, and the care devoted to the object. A strap made from superior alligator leather with vegetable tanning can last 5 to 10 years with moderate use and regular maintenance. Calf leather straps typically have a slightly shorter lifespan (3-7 years). Maintenance consists of keeping the strap dry, protecting it from aggressive liquids, and periodically applying a leather-specific balm. Premature wear usually indicates inferior leather quality or inadequate storage.