Features: case / bezel material: resin resin band mineral crystal shock resistant led light super illuminator world time 31 time zones (48 cities + utc) 1/100-second stopwatch countdown timer 5 daily alarms (with 1 snooze alarm) hourly time signal hand shift feature full auto-calendar (to year 2099) 12/24-hour format button operation tone on/off regular timekeeping analog digital display accuracy: ±15 seconds per month day display buckle clasp 200m water resistance approximate case diameter: 57.5mm × 53.4mm approximate case thickness: 18.4mm