Features: case/bezel material: stainless steel leather strap quartz movement mineral crystal black dial analog digital display chronograph function telememo 30 world time current time in 30 cities (29 time zones) 1/100-second stopwatch countdown timer 3 daily alarms hourly time signal full auto-calendar 10-year battery life 12/24-hour format regular timekeeping accuracy: ±30 seconds per month day display solid case back buckle clasp 100m water resistance approximate size of case: 52 x 47.6 x 14.2mm