eatures: Large LCD display for easy reading. Measure Voltage, Frequency, Current, Power Factor, Wattage, minimum & maximum Wattage and record cumulative Kilowatt-hour KWh, Time, Date and Electricity Expenses. Seven display modes, transferred by pressing "FUNCTION" button. Overload warning displayed on LCD. Resetting for abnormal display or no-response of button. Built-in 3.6V rechargeable battery (NI-MH) to store electricity and saving setting. Easy electricity price setting. Easy to Monitor Your Electricity Bill: Electricity price setting by pressing OK, VALUE, DISPLAY and SET button Built-in Battery Backup: 2X1.5V rechargeable batteries allows meter to be moved and still visible without losing readings. Measure Various Parameters + Overload Protection Function: Power (W), Energy (kWh), Volts, Amps, Hertz, Power Factor and Maximum Power (W), Time, Days ( Your electricity bills are vitally based on kWh) Large & Clear LCD Display for Easy Reading