Features: case/bezel material: resin resin strap quartz movement resin crystal black dial analog digital display led light afterglow illuminator telememo 30 world time 29 time zones (30 cities) 1/100-second stopwatch countdown timer 3 daily alarms hourly time signal full auto-calendar (to year 2099) 10-year battery life 12/24-hour format regular timekeeping luminous hands and markers accuracy: ±30 seconds per month day and date display solid case back buckle clasp 100m water resistance approximate size of case: 53.3 x 48.8 x 16.6mm