Astron GPS Solar

Its lugs add 5.9 mm to the 42 mm case, close to the 7 mm typical across the almanac, so its diameter is a fair guide to how it wears.

On our fit model it sits best on wrists from 6.75" to 8" (17.1–20.3 cm); below 6.75" the lugs start to reach the edge of the wrist.

At 12 mm thick it is slimmer than 59% of the 82 other sport watches we've measured, so it slides under a cuff more easily than most.