?Noise Reduction Design?: Upgraded noise reduction design, low noise (Decibels within 30cm?75dB), even if it is used by babies, it can be very safe. ?Lightweight and Portable&With Storage Box?: pen-shaped design, comfortable and firm grip, the pencil-like appearance at the pen handle ensures a comfortable and firm grip, lightweight design (19 x 2.6cm & 114 g), easy to use and convenient to travel. With exquisite magnetic accessory box, the grinding head can be stored at any time to avoid loss and omission. ?Adjustable Speed and Rotation?: Short press 6 speeds, one key can be adjusted, long press can freely adjust the speed, control the speed between 8500-13000RPM; Clockwise and anti-clockwise rotation is flexible for different angle uses. ?6 Interchangeable Attachments?: Designed for different uses, like filing, shaping and buffing nails, removing calluses and smoothing corns; Have salon-quality manicures and pedicures at home. ?Cordless Nail Drill Set?: 700mAH Lithium battery design-Completely avoid the limitations and inconvenience brought by cord. Rechargeable 2 hours about 90 minutes working time (?Use time will vary according to the speed and nail items). Easier for business trip or travel.