Features: resin case resin strap quartz movement caliber: 3517 resin crystal black dial digital display dual time 1/100-second stopwatch countdown timer daily alarm hourly time signal led backlight full auto-calendar 12/24 hours display month, day and date display screwed case back buckle clasp 100m water resistance approximate case diameter: 47.2mm approximate case thickness: 12.3mm approximate lug width: 19mm