Features: stainless steel case leather strap quartz movement mineral crystal black dial analog digital display chronograph function world time 1/100-second stopwatch countdown timer 3 daily alarms full auto calendar 12/24 hour display accuracy: ±30 seconds per month luminous hands and indexes day and date display screws case back buckle clasp 100m water resistance approximate size of case : 51.5 × 46.9 × 14.2mm