Junghans
Max Bill 027/3701.00— lug 18mm

The lug width of the Junghans Max Bill 027/3701.00 is 18 millimetres. This measurement represents the internal space between the two pins that attach the strap to the case. You can verify it by measuring the gap with callipers after removing the original strap. All straps with an 18mm lug width are compatible with this model.

The best strap depends on your aesthetic preference and intended use. A vegetable-tanned leather strap in brown or tan reinforces the orologio's Bauhaus heritage; a cotton gessato NATO offers daily versatility and ease of maintenance; an alligator in grey or cognac elevates tactile perception; a satin black rubber is ideal for summer and sports. In all cases, select understated materials: the Max Bill rejects chromatic frivolity.

Remove the current strap using a spring bar tool to push the pin inward, freeing the strap end from its seat. Repeat on the opposite side. Once removed, align the new strap's holes with the pins and press until you hear a click. If you lack experience, consult a professional watchmaker to avoid case damage.

Yes, provided the strap is compatible with the 18mm lug width. All straps designed for this width (regardless of brand) will fit the Max Bill's lugs perfectly. Always verify the 18mm specification before purchasing. Many enthusiasts prefer custom straps from specialist artisans who offer control over materials and construction quality.

A quality leather strap (vegetable-tanned or alligator) typically lasts 3–5 years with daily wear, depending on humidity, perspiration, and UV exposure. The patina that develops over time is desirable and embodied in the Bauhaus principle of "honest materials." A NATO or rubber strap lasts longer (7–10 years) as it does not degrade from environmental exposure, but requires periodic cleaning. Preserve the original strap as a backup or testament to the watch's wear history.