1. One key on/off, with the functions of automatic heating and red light mode, the water will keep a constant temperature after heating to 42±3℃.2. Water and electricity isolation heating technology, waterproof and prevent electric leakage to ensure safe and reliable use.3. Real-time detection of water temperature in the foot bath massager to avoid accidents caused by overheating.4. Red light irradiation can prevent damage to the integrated structure of the foot bath when heating without water, but also has a physiotherapy function.5. Keep the temperature constant, so you can enjoy the comfort of the foot bath massager. Portable handle design provides convenience in use.