The NIE665SV high wattage steam iron has a uniquely shaped soleplate featuring a steam circulation groove for maximum steam coverage. Steam from 29 vents is circulated all over the soleplate, increasing the steam coverage rate by 25% guaranteeing a fabulous finish every time. The curved Stainless Steel soleplate is durable, and easily glides over all types of fabric. Panasonic's built in Auto Anti-Calcium system helps prevent the build-up of mineral deposits in the water tank to maintain optimum steaming performance.