10 in 1 electric pedicure set Specification Battery capacity: 1200 mAh Power supply: 5V Voltage: 5V-1A (USB) Charging time: 2.5 hours (charging time should not exceed 12 hours) Use time: about 120 minutes < p> Instructions for Use Charging Precautions: Please fully charge the product before using it for the first time Use (display shows battery level at 99). friendly design Button sets are easy to use for everyone Provides a comfortable, secure grip in wet and dry conditions. Battery Level Indicator The battery does not need to be replaced Foot file 1.5 to 2 hours with included USB charging cable to fully charge You can see how much energy is left and when it needs to be charged 1200mAh large battery capacity , can be used for 120 minutes When the device is fully charged. Powerful, Safe, Fast 2 speeds on one button - 1700x/min low speed and 2000x/min fast speed more sensitive skin care dead skin. Suitable for people with sensitive skin and heavy calluses. A quick, painless and convenient callus remover worthy of your faithful companion