Features 1. Safe and convenient: The foot grinder will display "BL" and automatically activate the automatic shutdown protection function when the motor is blocked or the temperature is abnormal for a long time. 2. Reusable: The electric trimmer cocoon remover is suitable for all skin types. The polishing pad has self-adhesive properties and will not loosen during use. After each use, please replace the polishing disc with a new one to maintain cleanliness. 3. Powerful battery life: The cocoon remover is equipped with a battery. Our foot grinder is rechargeable, equipped with USB charging and fast charging interfaces, with a charging time of about 2 hours and a sustainable use of about 1 hour. 4. Equipped with a monitor: The foot cocoon remover is equipped with a LCD display screen, allowing you to clearly see the remaining battery level and gear position. Simply press the button to perform the grinding operation. Long press to turn off the electric foot grinder. 5. Easy to operate: The cocoon remover adopts ergonomic design and is easy to touch. Whether you are caring for or maintaining foot health. Specification Style: 2 alloy grinding heads, 3 quartz sand grinding heads Rated power: 5W Rated voltage: 3.7V Charging time: 2H Battery life: 1H Battery capacity: 500mAh Material: ABS Color: White, Black, Yellow, Blue, Grey Size: 8 x 7 x 3.35 cm Weight: 150 g Package Include: 1x Callus Remover 2x alloy grinding heads or 1x Callus Remover 3x quartz sand grinding heads