Features: resin case stainless steel bracelet quartz movement resin crystal black dial digital display world time dual time 1/100 second stopwatch daily alarm hourly time signal button operation tone on/off full auto calendar regular timekeeping 12/24 hours display 8 digit calculator month, day and date display solid case back deployment clasp splash resistant approximate case diameter: 34.4mm approximate case thickness: 8.2mm approximate lug width: 19mm