Features: resin case resin strap quartz movement mineral crystal black dial digital display shock resistant multi function alarm hourly time signal led backlight afterglow full auto calendar countdown timer flash alert regular timekeeping 1/100 second stopwatch 12/24 hours display luminous hands and markers month, day and date display screwed case back buckle clasp 200m water resistance approximate case diameter: 40.5mm approximate case thickness: 11.9mm