Junghans
Form 027/4731.00— lug 18mm

The Junghans Form 027/4731.00 features an 18 mm lug width. This measurement is crucial for aftermarket strap compatibility: any chosen strap must have an 18 mm width at its extremities to ensure perfect fitting without forcing or damage.

For the Form 027/4731.00, we recommend straps in noble materials that respect the minimalist Bauhaus design language. A black alligator strap with hand-stitched saddle seams is the most formal choice; a vegetable-tanned calf leather in brown or cognac tones introduces natural warmth; a grey NATO strap offers daily versatility. The choice depends on context and personal aesthetic preference.

The strap is replaced via the spring bar attachments located at the lug extremities. Using a dedicated spring bar tool or small flathead screwdriver, remove the elastic pin from the attachment, extract the original strap, and insert the new one, securing the pin again. The operation requires care to avoid damaging the case or lugs.

Absolutely. Any strap manufactured with an 18 mm width at its extremities is compatible with the Form 027/4731.00. We recommend selecting watch-quality straps from specialized craftsmen to ensure durability and wearing comfort equivalent to the original strap.

A quality leather strap, especially one crafted with vegetable tanning techniques, typically lasts 3-5 years with proper daily use. Lifespan depends on factors such as sun exposure, humidity, cleaning frequency, and tanning method. Leather straps naturally develop a patina that enhances their aesthetic appeal over time.