- There are 3 interchangeable grinding heads to choose from, coarse grinding head for stubborn calluses, medium grinding head for rough dead skin, fine grinding head for daily skin care. You can choose a suitable replacement head to meet your requirements. - With 2 adjustable speeds, 1900 rpm / min and 2200 rpm / min, powerful and convenient. The low speed is suitable for the care of delicate dead skin or sensitive skin. High speed is suitable for persistent thick callus or deep cleansing. Professional equipment will make your heels and feet soft, smooth and healthy - Thanks to the rotating planetary gear, it can grind calluses on larger areas more efficiently. A specially designed vacuuming function can suck up small callous epidermis and prevent them from flying. The openings in the grinding heads also help to dissipate heat and ensure equipment does not get burned out by heat generated during operation. - USB rechargeable battery, built-in 1200mAh battery, charging takes 2-2.5 hours and can be used for continuous operation for about 100-150 minutes. Thanks to the LCD display, you can see exactly the remaining battery level. Thanks to the wireless design, you can use electric callus remover on the go. - Waterproof and washable, don't worry about water, you can use it even while bathing. All parts of the foot care device can be rinsed under running water. Technical data: Color: as shown Material: ABS Grinding heads: 3 different grinding heads (rough grinding head / medium grinding head / fine grinding head) Power: 6W Battery capacity: 1200 mAh Charging time: 2-2.5 hours Usage time: 100-150 minutes High speed: 2200 rpm Low speed: 1900 rpm 1 x Electric Callus Remover 3 x grinding heads (coarse / medium / fine) 1 x grinding head clip 1 x protective cover 1 x cleaning brush 1 x USB cable 1 x User Manual (English)