Nomos Glashütte
Club 737.S3— lug 20mm

The lug width of the Club 737.S3 is 20 mm. This measurement represents the distance between the two lugs (horns) of the case and determines compatibility with straps. Measuring precisely is essential to avoid ordering straps that are either too wide or too narrow, which would compromise both the aesthetic appeal and the functionality of the buckle closure.

Vegetable-tanned calfskin represents the most versatile and recommended choice. This material ages naturally, developing a patina that accentuates the minimalist case design. For formal contexts, alligator in dark brown or black tones offers timeless elegance. For casual wear, a NATO strap in cotton or synthetic silk maintains versatility while preserving the rigorous aesthetic of the design.

Use a spring bar tool to gently remove the spring bars (the elastic pins securing the strap to the case lugs). Insert the tool into the small gap between the lug and the strap, press downward to compress the spring bar, and slide the strap outward. For installation, align the new strap with the lugs and click the spring bars into position until you feel the mechanical lock engage.

Yes, all straps with a 20 mm lug width are compatible with the Club 737.S3. However, it is advisable to select straps of quality that respect the slender proportions of the case (38.50 mm) and that incorporate an appropriate stainless steel deployante buckle. Avoid tolerances exceeding ±0.5 mm.

A quality leather strap (calfskin, alligator, cordovan) has an average lifespan of 3–5 years with daily wear, shorter if frequently exposed to moisture and sunlight. Vegetable-tanned leather tends to age better than chrome-tanned leather, developing patina. Regular maintenance (cleaning and conditioning every 6–12 months) significantly extends longevity and intensifies the aesthetic stratification of colour over time.