Dietrich
OT OTCAO5— lug 20mm

The lug width of the OTCAO5 is 20 mm. This measurement is taken by placing a digital caliper between the side lugs of the case. It is essential to verify this dimension before purchasing an aftermarket strap to ensure precise fitting.

For the OTCAO5, we recommend alligator or vegetable-tanned calf leather, which enhance the asymmetrical case architecture through natural texture. Alternatively, a technical fabric NATO or butyl rubber solution offers sportive versatility whilst maintaining visual coherence with the watch's radical design.

To change the strap, remove the watch from your wrist. Use a spring bar tool to gently push one of the side pins inward, releasing the strap from the first lug. Repeat on the other side. Insert the new strap by aligning the holes with the pins, then press until you hear the locking click.

Yes, 20mm straps are compatible with any watch featuring the same lug width. However, we recommend always verifying the exact measurement with a digital caliper before purchase, as minor tolerance variations could result in imprecise fitting.

A quality leather strap (alligator or calf) worn daily has an average lifespan of 3-5 years. Longevity depends on usage intensity, climate conditions, and maintenance. A rubber or NATO strap offers superior durability, often exceeding 5-7 years of intensive use.