5 year guarantee. Equipped with O’PRO technology (protective ohmic resistance): 50% increase in the life of the magnesium anode and therefore a longer life for the product. Copper sheathed heating element (9 W /cm2). Rapid heating time. Optimum protection of the tank against corrosion. Glass-lined tank with titanium and copper. Magnesium anode Equipped with O’PRO technology (protective ohmic resistance): 50% increase in the life of the magnesium anode and therefore a longer life for the product. Optimised inlet diffuser: for the best use of the quantity of hot water. Heating indicator light. 0% CFC polyurethane insulation foam. Dielectric connector supplied as standard: protects the hot water outlet against corrosion. Size 500mm (H) x 285mm (Diameter)