For professional use. 2 speeds. Fast heat-up. Visible water tank. A metal plate on the nozzle provides better results. K12 garment steamer features: Can steam both delicate and heavy fabrics — metal plate on the nozzle for improved results; visible water tank — easy to check the water level. The water is heated in a channel inside the steamer itself, allowing rapid heating. This means limescale is deposited in a tube and must be descaled regularly. The steamer tolerates standard descaling agents used for electric kettles and coffee machines.