Case diameter

30 mm watches

On the small side by modern standards; sizes like this were the norm for mid-century watches. Lug-to-lug length and case thickness matter as much as diameter for how a watch fits.

Watchfari lists 533 references with a sourced case diameter of 30.0 to 30.99 mm, spread across 44 brands and 113 families. Sourced case diameters run from 30 mm to 30.75 mm. By movement type: 131 quartz, 63 automatic, and 9 solar. The most common sourced case material is stainless steel (185 of 311).