Dual PTC Heating & Stereo Heating The ceramic barrel distributes heat evenly to prevent damage and disperse negative ions which keep hair smooth and shiny. Dual PTC Heating & Stereo Heating The ceramic barrel distributes heat evenly to prevent damage and disperse negative ions which keep hair smooth and shiny. Precise & Fast Heater Our wireless curling iron can evenly heats up in seconds and 2 temperature settings to meet your needs. Mini Size The hair curler is small lightweight and designed. You can easily put it in makeup bags, backpacks, and luggage.