·SUS444 white gold liner ·Rated working pressure 1.1MPa ·50mm thick fluorine-free polyurethane insulation ·High-quality brass drain valve ·In-immersed thread type INCOLOY electric heating element ·Automatic thermostat controller ·T&P safety valve ·Small size, saving space ·National Level 1 Energy Efficiency ·The liner is guaranteed for six years, and the parts are guaranteed for one year