Product Details Model: NT350ES Genuine copper tank, 1 mm thick, strong and durable, heats water faster. Genuine copper heater, more durable and efficient. Easy control with a dial to adjust power as needed. ESD safety system cuts power within 0.08 seconds when leakage current exceeds 8mA. Dual temperature detection system: First cut-off at 42-55°C to return water to normal temperature. Permanent cut-off at 90°C to prevent accidents due to malfunction (reset required). Flow Switch Control supports low water flow pressure of 20kPa. If lower, it cuts off operation to extend the product’s lifespan. Meets TIS standards and features an Energy Star 5 rating. 7-year warranty on tank and heating coil. Includes a 5-in-1 water pressure showerhead. Key Information Product Type: Electric Water Heater Tank Material: Genuine Copper, 1 mm thick Heater Material: Genuine Copper Body Material: ABS Plastic Safety System: ESD Product Specifications Brand: Lucky Flame Model: NT350ES Warranty: 7 years for tank and heater Power (W): 3500 Voltage (V): 220 Appropriate Wire Size and Circuit Breaker (A): 20 Water Pressure Supported (kPa): 20-350 Width (mm): 200 Depth (mm): 86 Height (mm): 360 Weight (Kg): 1.5