Material: ABS+Mineral crystal Size: 10.5 * 6.6 * 5.5 cm Charging voltage: DC 5 V Charging current: 2 A Rated voltage: 3.7 V Rated power: 2.5 W Battery capacity: 500 mAh Low speed speed: 1600 rpm High-end speed: 1700 rpm Color: silver gray Function: exfoliating dead skin, calluses, cuticles, etc. Quantity: 1 piece Package content: 1 piece * Electric foot sharpener 1. Durable and easy to use All 3 round frosted heads are made of quartz micro-mineral crystals for long-term use. 2 fine granulate heads and 1 coarse granulate heads. Coarse-grained heads can remove stubborn, horny, dead skin and fine granular heads can be used for daily care. The shell of the foot slider is made of ABS which is durable. 2. 2 speeds The electric callus remover contains a low speed of 1600 rpm for gentle care and a high speed of 1700 rpm for deep cleansing. An important control is that the light is green at low speed. It is suitable for foot callus and more delicate skin care at low speed. The light is red at high speed. It's better at removing stubborn, thick calluses and dead skin. 3. Super vacuum adsorption The electric foot callus remover has a powerful vacuum cleaner system. The high-speed centrifugal rotary adsorption can achieve suction while grinding and adsorb 98% dander without worrying about the dander. The dust collection tank and the grinding head can be disassembled for cleaning. 4. Sophisticated design The compact body with ergonomics and skid resistance ensures a comfortable and safe grip, offering you easier operation and carrying. Professional callus remover can protect your foot. The round head design matches the feet better. 5. Quickly rechargeable USB stick The electric callus remover is wireless and has an integrated lithium battery capacity of 500 mAh for long working hours. Simply charge the foot file for 1.5 hours using the included USB charging cable for a quick charge. It can be operated continuously for approx. 50 minutes.