Pedicure kit includes an electric callus removal device and a charging cable, plus three replacement roller heads. The three heads provide different levels of grinding to address various problems - Black head (rough grinding head): for middle aged and elderly people with severe keratin and for old heel cracked calluses - Grey head (medium grinding head): for men and women or sports enthusiasts, suitable for exfoliation and peeling on the sole of the foot - White head (fine grinding head): for slightly thick skin on young women, suitable for daily topical beauty care Design and operation - Curved body design with a curved comfortable grip - One click to remove the grinding head, just tap to easily replace the grinding head Battery and lighting - 1200 mAh lithium battery - Run time of about 60 to 90 minutes on a full charge - Charging time of about 2 to 3 hours - Includes a digital battery display and indicator lights to show remaining battery life and when to charge - For women's foot care, the dead skin peeling light automatically turns on when the foot file is in use, providing illumination in the targeted area of the dead skin Use scenarios - Scenario 1: At home care for an older adult with severe keratin and cracked heels using the black rough grinding head for targeted removal - Scenario 2: Regular exfoliation and peeling for active individuals or sports enthusiasts with the grey medium grinding head - Scenario 3: Daily gentle skin care with the white fine grinding head for young women to maintain smooth skin on the soles Notes - Includes the electric callus removal device and a charging cable along with three replacement roller heads - Replacement heads are color coded as black rough, grey medium, and white fine for easy selection - The peel light and digital battery indicators operate as described for convenient use