1. Great Performance: Repair different conditions of the foot, hard and wear proof, easy exfoliation, gentle and skin friendly, not easy to heat, reduce skin discomfort and tug. 2. Two Gear Speed Regulation: 1500RPM first gear, dealing with mild dead skin, 1700RPM second gear, can solve thick skin crack, two gears one button switch. 3. Two Grinding Head: Two kinds of grinding head of thickness and fine, gentle repair foot problems, also with two different grinding particles, solve the problem of dead skin of different thickness of feet. 4. Rechargeable: Long endurance, 1000mAh lithium battery, battery life of 1.3H, the specific length of use is related to self use of time and frequency. 5. ABS Material: Made of premium ABS, beautiful appearance, exquisite and small, fashionable and easy to carry, let you away from the dead foot skin trouble. Specification: Item Type: Electric Foot Callus Remover Material: ABS Weight: Approx. 205g/7.2oz Battery Capacity: 1000mAh polymer lithium battery (shipped with built in battery) Input and Output: DC 5V Power: 5W Working Current: 1A High Speed: 1700rpm Low Speed: 1500rpm Gear Adjustment: two gears Charging Interface: Type C How to Use: Replaceable grinding head 1. Make sure the machine is turned off. 2. Hold both ends of the grinding head with your index finger and thumb at the same time and pull it upward. 3. When installing the required grinding head, press the grinding head to the bottom, and the grinding head installation is completed. Refer to the manual for other operations packing list: 1 x Electric Foot Callus Remover 1 x Grinding Head 1 x Type C Cable 1 x Specification 1 x SpongeABS Material: Made of premium ABS, beautiful appearance, exquisite and small, fashionable and easy to carry, let you away from the dead foot skin trouble. Two Grinding Head: Two kinds of grinding head of thickness and fine, gentle repair foot problems, also with two different grinding particles, solve the problem of dead skin of different thickness of feet. Two Gear Speed Regulation: 1500RPM first gear, dealing with mild dead skin, 1700RPM second gear, can solve thick skin crack, two gears one button switch. Rechargeable: Long endurance, 1000mAh lithium battery, battery life of 1.3H, the specific length of use is related to self use of time and frequency. Great Performance: Repair different conditions of the foot, hard and wear proof, easy exfoliation, gentle and skin friendly, not easy to heat, reduce skin discomfort and tug.