Features: case/bezel material: resin resin strap mineral crystal luminous dial digital display shock resistant electro luminescent backlight afterglow chronograph function world time am/pm display 1/100-second stopwatch countdown timer 5 daily alarms (with 1 snooze alarm) hourly time signal full auto-calendar (to year 2099) 12/24-hour format button operation tone on/off regular timekeeping accuracy: ±30 seconds per month day and date display solid case back buckle clasp 200m water resistance approximate size of case: 44.7 x 40 x 12.5mm