Features: case/bezel material: resin resin strap mineral crystal black/grey textured dial analog digital display shock resistant led light afterglow 31 time zones (48 cities + utc) world time 1-second stopwatch countdown timer daily alarm hourly time signal hand shift feature full auto-calendar (to year 2099) 12/24-hour format button operation tone on/off regular timekeeping accuracy: ±30 seconds per month luminous hands solid case back buckle clasp 100m water resistance approximate size of case: 48 x 44.3 x 15.5mm