Features: case/bezel material: resin resin strap tough solar mineral crystal black dial analog digital display neobrite led light (lcd part only) world time 31 time zones (48 cities + utc) 1/100-second stopwatch 2 countdown timers 5 daily alarms hourly time signal battery power indicator full auto-calendar (to year 2099) 12/24-hour format button operation tone on/off regular timekeeping accuracy: ±30 seconds per month luminous hands and markers day display buckle clasp 100m water resistance approximate case diameter: 46mm approximate case thickness: 14mm