Features: case / bezel material: resin resin strap quartz movement caliber: 3230 mineral crystal black dial 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: 53.2 x 50 x 16.3mm