Features: case / bezel material: resin resin band quartz movement resin glass / spherical glass led backlight, afterglow dual time 1/100-second stopwatch multi-function alarm (one-time or 7-time snooze) hourly time signal auto-calendar (to year 2099) regular timekeeping accuracy: ±30 seconds per month buckle clasp 50m water resistance size of case: 43.9 × 35.7 × 12.5mm