Features: This foot callus remover has a dust collection function. Freely switch between fast and slow speed. 1500 mAh large-capacity lithium battery, fast charging, long-lasting battery life. Low noise. Waterproof, the whole machine can be washed with water. Overcharge and over-discharge protection. Ergonomic design, with fashionable and streamlined appearance and non-slip handle. Safe design Your callus remover uses a built-in vacuum cleaner that cleans and vacuums dead skin at the same time. Safe with advanced pressure sensitive technology that easily removes dead skin, tough skin, wrinkles and annoying calluses from your feet. Two speeds Thanks to the quality and the power motor, this file has two adjustable speeds. The lowest (1700 revolutions per minute) is suitable for sensitive skin and small calluses. The other, 2200 revolutions per minute, is more efficient for stubborn hardness and strong skin. Specification Material: ABS Nominal power: 6W Number of grinding heads: 3 Input voltage: DC 5V Gear position: 2 gears Speed: 1900/2200 rpm Battery capacity: 1500mAh lithium battery Charging time: 2-2.5 hours Use time: 150 minutes Battery type: Lithium battery 1500 mAh, continuous battery life: about 150 minutes 1 x Electric callus remover 1 x coarse grinding head 1 x Coarse grinding head 1 x fine sand grinding head 1 x USB charging cable 1 x Grinding head clamp 1 x dust cover 1 x cleaning brush 1 x User Manual 1 x color box "all Products From Us Have Undergone Strict Quality Checks. if There Is Any Quality Problem Or You Are Not Satisfied With The Product contact Us. we Will Give You The Best Solution."