Features: case/bezel material: resin resin strap quartz movement caliber: 3299 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 day and date display solid case back buckle clasp 200m water resistance approximate size of case: 48.9 x 42.8 x 13.4mm