Heater adopts advanced ceramic heating technology and is equipped with PTC heating sheets and aluminum sheets,seconds fast heating. Shell made of upgraded flame-retardant shell material to effectively avoid fire hazards. No light heating intimate not heat the eyes & low noise. Overheating power protection, power off when dumping after 30-degree. Wide angle heating, wide range of warming area & constant temperature heating. Lightweight body and a hidden carrying handle behind that can be easily lifted or moved. It’s a perfect gift for winter, make your work, life ease in cold environment, also suitable adults and children to sleep at night. US plug.