[Safety and security]The PTC car space heater has the advantages that traditional heating elements doesn't have, such as constant temperature heating and high thermal conversion rate. No fire& flame be generated while using. We hope this small product could produce more warm air at this cold winter [Stability and durability]The compact design more to use in . The general standard is that the power attenuation is less than 10% after 2000 hours usage. And for larger space, maybe you could install 2 or more heaters in the room. [Energy saving]This PTC heater fan have characteristics of automatic energy saving. This system allows an automatic regulation of the heating power within certain ranges. When the air was warmed, it could consume less power energy than before. With insulator on , this item is safe to use, high reliability. It can heat up quickly with long service life. With mounting holes, it is easy to install. It adopts high temperature wire as leading wire, . This system allows