Case Bezel Material: Resin Resin Band Resin Glass 100-Meter Water Resistance Telememo Memory Capacity: Up To 30 Sets Of Data, With 8-Character Name And16-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 Time keeping 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 OfCase : 52.2 46.6 16.6Mm Total Weight : 49G