Casio AE-1200WH

Its lugs add only 2.9 mm to the 42.1 mm case, against 7.1 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 12.5 mm thick it is slimmer than 50% of the 10 other digital watches we've measured, so it slides under a cuff more easily than most.