Junghans
Max Bill 027/5703.00— lug 18mm

The lug width is 18 millimetres, an uncommon specification that defines this model. It is measured as the internal distance between the two lateral pins of the case. This dimension is intentional, designed by Max Bill to maintain visual balance on a 34mm case according to Bauhaus proportion principles.

Brown alligator or vegetable-tanned calf leather are the most appropriate choices, preserving the rationalist aesthetic of the case. For daily sports use, nylon NATO straps are practical; rubber is ideal for those using the watch as an actual tool. All must be 18mm lug width compatible.

Using a spring bar tool that allows you to retract the lateral lug pins. The procedure requires care to avoid scratching the case. We recommend having the operation performed by a qualified watchmaker or consulting video tutorials. The 18mm lug width compatibility must be verified before purchasing a new strap.

Yes, provided they have the correct 18mm lug width. Not all universal straps are dimensioned for this specification: always verify before purchase. Milano Straps handcrafted straps are built to measure and guarantee total compatibility with the Max Bill, preserving original aesthetics.

A high-quality leather strap (alligator, vegetable-tanned calf) typically lasts 3-5 years with intense daily wear. Longevity depends on humidity, sun exposure, and cleaning frequency. Vegetable-tanned straps develop natural patina and age elegantly, extending perceived value over time. Rubber and NATO straps have greater durability, lasting 7-10 years.