Casio W-218H

Its lugs add only 1.2 mm to the 43.2 mm case, against 7 mm typical across the almanac, so it wears smaller than its diameter suggests.

On our fit model it sits best on wrists from 6.25" to 7.5" (15.9–19.1 cm); below 6.25" the lugs start to reach the edge of the wrist.

At 10.8 mm thick it is slimmer than 72% of the 18 other digital watches we've measured, so it slides under a cuff more easily than most.