1. This foot grinder should not be used with excessive pressure on the skin, as this will impair the proper functioning of the grinder. When polishing and using, only lightly touch the horny layer of the skin. 2. If the device doesn't work when turned on, it may be due to a low battery. We recommend fully charging the device before testing. When fully charged, the charging indicator will not light up, and it will take 2 hours to fully charge the battery. 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.
