Features: resin case resin strap mineral crystal digital display shock resistant electro luminescent backlight data bank world time day counter 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: ±30 seconds per month screwed case back buckle clasp 200m water resistance approximate case diameter: 43mm approximate case thickness: 15mm