Strap for Bogner by Junghans Willy Chronoscope Stainless Steel / White

The lug width of the Junghans Bogner 027/4260 is 22mm. This measurement represents the distance between the two attachment holes where the strap connects to the case. To verify compatibility, simply measure with a digital calliper: 22mm is the historic standard for quality European sports chronographs.

For this chronograph, we recommend Tuscan vegetable-tanned leather in cognac brown, which develops a personal patina over time and dialogues elegantly with the stainless steel case. Alternatively, chrome-tanned calf leather in dark brown maintains formal-sportive rigour. For intensive daily use, military-tone NATO straps or brown-hazelnut rubber offer zero-maintenance robustness consistent with the model's functional aesthetic.

To change the strap, use a spring bar removal tool to gently push the small elastic pins securing the strap. Once the attachment holes are emptied, the old strap detaches. Align the new strap (always 22mm lug width) with the holes and reinsert the pins until final click. Consult a specialist repairer if you prefer certified operation.

Yes, absolutely. Any strap with 22mm lug width is compatible with the Junghans Bogner 027/4260. Quality artisanal aftermarket straps (vegetable-tanned leather, NATO, rubber) guarantee durability identical to original straps, with the added advantage of aesthetic customisation and often superior materials.

A vegetable-tanned leather strap typically lasts 3-5 years of moderate daily wear, as the natural material ages and darkens with perspiration and sun exposure. Durability increases if the strap is dried regularly after moisture exposure and stored in ventilated environments. Chrome-tanned calf resists longer (5-7 years), whilst rubber and NATO guarantee 7-10 years without maintenance.