Power Supply:3 VDC (1 lithium battery CR2032)
Measurement Range: Steps: 0 to 99,999 steps
Memory: Previous 7 days on display
Setting Range: Time: 12:00AM to 11:59PM
Operating Temperature: 14ºF-104ºF (-10ºC to 40ºC) 30%-85% RH Humidity
Storage Temperature: -4ºF to 140ºF (-20ºC to 60ºC)
Humidity/Air Pressure: /10 to 95% RH /700 - 1060 hPa
Precision of Step Counting: Within +/- 5% (by vibration testing machine)
Time Precision: Within +/- 90 seconds of the average monthly deviation (under normal temperature)
Battery Life: Approx one year (when used for walking 10,000 steps a day)
External Dimensions: Approx 2''(diameter) x 1''(d) (53 mm x 25.8 mm)
Weight: Approximately 1 1/4 oz (battery included)
Contents: Pedometer, Battery and Instruction Manual