Feature: 1. It works by circulating heating, supports temperature control, and has stable performance. 2. Electric water heater, uses high‑quality stainless steel, durable in use and corrosion‑resistant. 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. Specification: Condition: 100% Brand New Item Type: Water Heater Material: Stainless Steel Voltage: 220V-380V Parameters: 6KW-9KW-12KW-15KW Purpose: Water circulatory system's hydrotherapy, hot spring, SPA, hot tub scene. Application: Small swimming pool, can only be used in 8-13m³ water.