1.Made of iron with nickel plating, this water heater is with fast heating speed, corrosion resistant and safe to use2.Spiral immersive design provides a uniform heat and fast thermal conductivity, improving the heating efficiency3.High power ensures a quick heating speed, so it is very convenient to use4.It cannot be used in dry, less water situation, and please dip all the tube into water while using.5.It can be used in water, especially fit for heating water in large size container like bucket, basin, bathtub, etc