"Accuracy at Normal Temperature: +/- 15 Seconds per Month Digital Timekeeping: Hours, Minutes, Seconds, am/pm, Month, Day, Date, 12/14 Hour Time Format Full Auto Calendar Pre-Programmed until the Year 2039 3 On Screen Formats: Day/Date & Time, Home City Codes, and Daylight Savings Time/Standard Time Analog Timekeeping: Hour and Minutes (Minute Hand moves every 20 seconds, digital graphics count the seconds) World Time: 27 Cities (29 Time Zones) Countdown Timer: Measuring Unit: 1 Second Countdown Range: 60 Minutes Countdown Start Time Setting Range: 1 to 60 Minutes in 1 Minute Increments Auto-Repeat Timing Progress Beeper Stopwatch Measuring Unit: 1/100 Second Measuring Capacity: 59:59:99 Measuring Modes: Elapsed Time, Split Time, Two Finishes Alarms: 4 Daily Alarms and 1 Snooze Alarm; Hourly Time Signal Illumination: LED Selectable Illumination Duration (1-3 Seconds) Auto-Light Switch 46mm Case Width (Approximately 1 3/4"") 14mm Case Thickness (Approximately 9/16"") Battery: CR1220 Battery Life: Approximately 3 Years with Normal Use"