Fast Heating with PTC Ceramic: Fan heater heats up quickly thanks to advanced PTC ceramic, which produces sufficient heat in a short time. Electric fan heater will provide you with instant and efficient warmth during the cold winter. 2 Temperature Settings: PTC heating element is the abbreviation of electric ceramic heating element, which is more stable than traditional heating element, heats up quickly. The heater has low thermal resistance, fast heat exchange and automatically constant temperature. Low Noise Level: The noise made by this ceramic heater is less than 30 dB, quiet enough for most people to use in a bedroom while sleeping. Provide a quiet space for your comfort. Overheat & Tip-Over Protection: The portable heater made of flame-retardant ABS material is equipped with various safety systems, including overheat protection, tip-over protection and automatic shut-off. So you can enjoy the warmth of a portable heater while eliminating safety risks and using it indoors with