10-year battery life and world time, 100-meter water resistance, 10-year battery life, World time, Round world map dial, Telememo 30. 1/100-second stopwatch, Alarms Resin Glass, 100-meter water resistance, Case / bezel material: Resin, Resin Band, Telememo, Memory capacity: Up to 30 sets of data, with 8-character name and 16-digit telephone number. Others: Remaining memory screen, auto-sort. World time, current time in 30 cities (29 time zones), daylight saving on/off. 1/100-second stopwatch, Measuring capacity: 23:59'59.99'', Measuring modes: Elapsed time, split time, 1st-2nd place times, Countdown timer. Measuring unit: 1 second, Countdown range: 24 hours, Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments). 3 daily alarms (with 1 snooze alarm). Hourly time signal, Full auto-calendar (to year 2099), 12/24-hour format, Regular timekeeping, Analog: 2 hands (hour, minute (hands move every 20 seconds), Digital: Hour, minute, second, am/pm, month, date, day, Accuracy: ±30 seconds per month, Approx. battery life: 10 , years on CR2025, Size of case:52.2×46.6×16.6mm, Total weight: 49 g.