Casio F-91WM-3A

The most recognisable digital watch ever made, and one of the few designs Casio has never felt the need to change. Alarm, 1/100-second stopwatch, auto-calendar, LED light, 21 grams on the wrist, and a battery that runs for seven years.

Movement

Casio quartz digital

Case

Resin

Crystal

Resin glass

Water resistance

Day-to-day water resistant — splashes only, not for swimming

Strap

Resin band

Diameter

38.2mm