Specification: Item Type: Electric Foot Grinder Product Stalls: 2 levels Product Voltage: 5V Battery Type: Lithium battery Battery Capacity: 1000mAh Charging Time: 3h Instructions: 1. Soak your feet in warm water for about 10 minutes and then wipe dry 2. Remove the upper cover of the grinding head 3. Select the appropriate grinding head to be stuck on the buckle according to your needs 4. Use the side of the grinding head to full the dead skin position (choose low and high levels according to needs) Package List: 1 x Host 1 x Cover 2 x Grinding Head 1 x Sponge 1 x USB Data Cable 1 x Brush 1 x Cover Strip Note: 1. Due to the inherent characteristics of lithium batteries, after reaching the rated number of and discharge times (generally about 500 times, there may be deviations), there will be capacity degradation, which is a normal scene. 2. When charging this product, please use a special charger for DC5V lithium battery or connect to a computer USB for charging. It is normal if the host is slightly hot during the charging process. 3. When the battery is insufficient during use, please it in time. Excessive use will affect the service life of the machine. 4. If you do not use the machine for a long time, please full the battery. It is recommended to it at least once a month, otherwise it will affect the life of the machine.