Many references use cut-to-fit straps. Measure on the wrist and trim in small steps; strap sizes differ between 40 mm and 42 mm cases, so avoid cross-fitting.

No. The curvature and lug geometry are different; adapters are required and still may not seat flush.

These are not lab-pressure-tested. Treat them as splash-resistant only unless a specific piece has been pressure-checked after assembly.

Popular originals include ~40 mm (e.g., 5167) and ~42 mm (e.g., 5168). Replicas can vary ±0.5–1.0 mm depending on the factory and batch.