Junghans
Max Bill 027/3400.00— lug 20mm

The Junghans Max Bill 027/3400.00 features a lug width of precisely 20mm. This dimension is critical for aftermarket strap installation: any replacement strap must measure exactly 20mm to fit correctly onto the spring bars without excessive play or friction.

For the Bauhaus aesthetic of the Max Bill, we recommend alligator leather in cognac or black tones, or vegetable-tanned calf leather. For daily versatility and durability, a cotton NATO strap is excellent. Your choice depends on context: formal occasions favour alligator, versatile use suits calf leather, and sporty wear calls for NATO.

Position your watch on a stable surface. Use a spring bar tool to compress the spring bars at both ends of the lug (the small metal pins securing the strap). Once compressed, the strap will disengage. Insert the new strap beneath the spring bar and release: the bar will return to position, locking the strap securely.

Yes, absolutely. Provided the strap has a lug width of exactly 20mm and compatible thickness (maximum 4mm to pass smoothly under the spring bar), any quality aftermarket strap will function perfectly. Specialist brands available on milanostraps.it ensure construction quality and finish standards appropriate to your watch.

A quality vegetable-tanned leather strap typically lasts 3–5 years under moderate daily wear. Lifespan depends on climate (humidity shortens it), frequency of use, and maintenance: avoid prolonged water exposure and dry quickly after rain. Alligator leather offers slightly superior longevity. Cotton NATO straps endure 5–7 years before visible wear becomes noticeable.