Features: case / bezel material: resin resin strap mineral crystal digital display shock resistant electro luminescent backlight afterglow flash alert 1/100-second stopwatch countdown timer multi-function alarm hourly time signal full auto-calendar (to year 2039) 12/24-hour format regular timekeeping accuracy: ±15 seconds per month solid case back buckle clasp 200m water resistance approximate size of case : 48.9 x 42.8 x 13.4mm