Features: case/bezel material: resin resin strap quartz movement mineral crystal digital display electro-luminescent backlight 1/100-second stopwatch countdown timer multi-function alarms hourly time signal full auto-calendar 12/24-hour format regular timekeeping accuracy: ±30 seconds per month day display solid case back buckle clasp 200m water resistance approximate size of case : 53.2 x 50 x 16.3mm