Singer SteamCraft irons have the specific features that finally solves Sewers hunt for the perfect iron. Withthe OnPointtip technology (patent pending) to easily iron around buttons, seams, and pleats for a crisp finish. The always-on 30-minute vertical auto-off feature keeps your iron ready during long projects. Vertical steam allows for effortlesssteam for larger bolts of fabric. SteamCraft irons have internal anti-calcium filters so they are tap water safe . We do recommend using the self clean function on a regular basis if the iron is used frequently to ensure any sediments or minerals are flushed out of the system. This is included in the instruction manual. Now with a color matched Heat-resistant pad , and the all new ECO mode that uses less energy to produce high quality steam.