Features: resin case resin strap quartz movement mineral crystal digital display electro luminescent backlight world time 1/100 second stopwatch countdown timer 5 daily alarms hourly time signal full auto calendar 12/24 hours display regular timekeeping accuracy: ±30 seconds per month day and date display screwed case back buckle clasp 200m water resistance approximate size of case: 45 × 43 × 13mm