Features: case/bezel material: resin resin strap quartz movement mineral crystal black dial analog digital display world time 1/100-second stopwatch countdown timer 5 daily alarms hourly time signal button operation tone on/off 12/24-hour format full auto-calendar (to year 2099) regular timekeeping accuracy: ±30 seconds per month luminous hands day and date display solid case back buckle clasp 100m water resistance approximate size of case: 46.3 × 43.3 × 15.8mm