Features: case/bezel material: resin resin strap quartz movement mineral crystal analog digital display neobrite shock resistant led backlight world time (48 cities) dual time 1-second stopwatch countdown timer 3 daily alarms hourly time signal full auto-calendar (to year 2099) 12/24 hours display regular timekeeping accuracy: ±30 seconds per month solid case back buckle clasp 100m water resistance approximate size of case: 48.9 × 42.9 × 15.3mm