1.ABS material shell
2.Mechanical Control with Thermostat knob.
3.overbasin mounting option
4.Enamel Tank
5.Non-fluorine Polyurethane Foaming Insulation Layer
6.Protection against dry heating / Over-temperature          
7.With Encloy 800 Element , "Kawai" brand                      
8. With Magnesium anode(AZ31)Φ21x200, and Safety Valve