Features: resin case resin strap mineral crystal black dial analog digital display step tracker neobrite shock resistant double led light dual time 1/100 second stopwatch countdown timer 5 daily alarms hourly time signal full auto calendar 12/24 hours display am/pm display day and date display accuracy: ±15 seconds per month screwed case back buckle clasp 100m water resistance approximate case diameter: 43mm approximate case thickness: 13mm