This 13 in. PTC Ceramic Heater is for room heating. It utilizes the most advanced heating technology of PTC, which is highly efficient while safe. When it is cold, the resistance is low, so it heats very fast; when it is over-heated, it shut off automatically. Furthermore, you can enjoy fashionable design with easy touch screen operation and clear led display. 5-settings (low, high, eco, fan, freeze) allows you to choose the most suitable and economic setting according to your environment. An oscillation feature is include for easier and more comfortable use. Finally, it is quite small and light, you can enjoy the easy mobility with this portable heater.