Specification: Item Type: Electric Foot File Material: ABS Battery Specifications: Built-in lithium battery 1200mAh Main functions: 1. Removing dead skin calluses and cutin. 2. Dust collection and dander collection. How to use: Long press the switch, the default into slow gear, green light on. In a short press a switch red light is high gear, long press again can shut down. Note: This machine has the function of waterproof, after grinding the skin the head can be washed alone, whole machine can also be washed under the water faucet (do not soak in the water for a long time). Package List: 1 x Electric Foot File 1 x Coarse Grinding Head 1 x Fine Grinding Head 1 x USB Cable 1 x Cleaning Brush 1 x Manual 1 x Grinding Head Remove Tool