Item is sold as a massager. The supplier bears no responsibility for the product should the product be mistreated. In the case of non-waterproof massager, you should take extreme care not to let the item get wet. In the case of waterproof massager, you should ensure the socket is covered to avoid any leaking. To avoid problems, don't use the item on any infected or irritated skin. Check the warnings on the back of the package to see if the item contains materials that may cause allergic reactions. Store your massager on its own and not combined with other products varying materials as they cause chemical reactions and produce break down in chemical structure. When you are finished using your massager allow it to cool down before storing away. Excessive usage of the massager will cause wear on the motor and cause motor to overheat. If this happens and the massager seems alarmingly hot, switch it off immediately and allow to cool down before using again. To avoid injury or aggravation of pre-existing conditions, this device should not be used on swollen or inflamed areas or skin lacerations. No medical claims are warranted or implied by the use of this product.