Product name: Portable battery-powered nail polisherProduct with packaging box weight: about 536gProduct packaging box size: 21*17.6*5.7cmLithium battery capacity: 2000mAH full charge time 3.5 hoursInput voltage: DC5V 2AMotor voltage: DC 7.4V 0.5AMaterial: ABS plasticSpeed: 0-30000RPM adjustable speed, adjustable forward/reverseCharging power supply: Type-c grinder charging interfaceBattery level can be viewed and indicatedUSB output interface: The body provides USB charging power, which can be used to charge mobile phones, etc., or as a power bank.Buckle clip design: It can be attached to the waist belt for portable use.Packing list1 x nail polisherSteps for usageStep 1: Insert the drill bit of your choice.Step 2: Connect the power cord to the nail drill head, and connect the other end to the wall socket.Step 3: Control the "forward/off/back" button in the middle of the power cord to turn on/off or change the direction of rotation.Step 4: Control the (speed switch) in the middle of the power cord to adjust the speed.Prompt1. Don't let nail drill work too long.2. Do not open the body by rotating it.3. Please remove the drill bit after use and store it in a dry place.4. When not in use, please put it in a dry place