SHIJIN Electric Foot Callus Remover with LED Screen, 2 in 1 Manicure & Pedicure Kit, Electric Foot File for Women & Men, Cordless Feet Filer for Foot Callus, Thick Nails Foot Filer

1. Turn on the device by pressing the power button. 2. Select the appropriate bit for your needs: pedicure bit for foot care and nail bit for thick nails. 3. Apply the bit to the area you want to treat, using forward (F) rotation for grinding and reverse (R) rotation for polishing. 4. Adjust the speed using the + and - buttons to suit your skin and nail type. 5. Monitor the battery level and charging status on the LED screen. 6. Charge the device for 2 hours using the USB charging cable for 3 hours of normal use. 7. Avoid using the device on wet skin and do not force the device to prevent injury. 8. Keep the device away from water to maintain its functionality.