Rita Life Hydrogen Bath ver1 Place the main unit outside the bathtub and submerge the electrode, connected by a cord, into the filled bathtub. You can enjoy a bath while generating hydrogen, and hydrogen will be produced throughout the bathroom. It warms you to the core and becomes an indispensable item. Regular maintenance is required to clean the electrodes. The目安 is about once a month. It will notify you with a voice prompt. *I used it about 10 times after purchase and have stored it at home since then. We cannot handle any initial defects or other problems. Please understand that returns and exchanges are not accepted. The manufacturer's warranty has expired.