The VEVOR 4 Gallon Electric Mini-Tank Water Heater Shower Compact Upgrade is a compact and efficient water heater made of ABS plastic with a capacity of 4 gallons. It operates at a temperature range of 55-145℉ and is insulated with polyurethane for added energy efficiency. The heater is designed with a magnesium rod as a protective anode and has a rated power of 1440 watts. With dimensions of 14.8x15.7x12.5 inches and a weight of 21.34 lbs, this water heater is a reliable and convenient upgrade for hot water needs in the home or garden.