The only cordless straightener with flexing copper plates engineered for less hair damage1 Smooth, shiny results. Precision styling with less hair damage1 Manganese copper alloy plates, machines to the width of a human hair. The plates flex to gather hair neatly together, for enhanced styling with less heat. Intelligent heat control regulates the temperature of the plates 100 times a second, so you never exceed your set temperature. Cordless versatility corded thermal performance powerful 4-cell lithium-ion battery delivers the thermal performance of a corded straightener.