1. It works by circulating heating, supports temperature control, and has stable performance. 2. Electric water heater, uses highquality stainless steel, in use and corrosionresistant. 3. Support automatic constant temperature, water temperature can be adjusted according to needs. 4. 5.5KW electric heater, with water tank inside, which can heat up quickly and is easy to use. 5. Suitable for water circulation systems such as hydrotherapy, small swimming pools, hot springs, SPA, hot tubs, etc.