1. This foot grinder should not be used with excessive pressure on the skin, as this may impair the proper functioning of the grinder. For polishing and use, lightly touch the horn layer of the skin. 2. If the device does not work when turned on, it may be due to a weak battery. It is recommended to fully charge the device before testing. When fully charged, no charging indicator will light up, and it takes 2 hours for the battery to be fully charged. The foot grinder can be used while charging. 3. This product is not waterproof and cannot be rinsed with water. Only the grinding head can be removed and rinsed with water.
