Feature:360° not run off dandruff, all dandruff is absorbed, and hygienic.Arc grinding can 98% of area of, and completely . device, lightly press m when in use, in order to avoid excessive , m will automatically stop when applied excessive .Grinding can be detached and washed, easy to operate and durable.Suitable for removing calluses, dead skin and dirty substances on feet, making your skin and smooth.Specification:Condition: 100% Item Type: Electric FileRated Voltage: 3.7VRated : 8WCharging Voltage: 5.0VCharging t: ≤1AUse: 50min Capacity: 1200mAhOptional Color:, SilverMaterial: + Operating:1. Press grinding and it out to replace grinding head2. Rotate gold/silver part clockwise(storage bin), to the inner sponge. After inner sponge is ed, lock gold/silver part erclockwise(storage bin), and ing is complete.