Features: case/bezel material: resin resin strap quartz movement mineral crystal black dial analog digital display shock resistant led light world time 31 time zones (48 cities) 1-second stopwatch hourly time signal countdown timer 12/24 hours display daily alarm regular timekeeping accuracy: ±30 seconds per month day and date display solid case back buckle clasp 100m water resistance approximate size of case: 48.9 x 42.9 x 15.3 mm