[Advanced Materials]With PTC ceramic heating element design, which makes heating safer and faster. Stay warm and comfortable in any small space, it& 39;s the perfect little heater for indoor use. [Four Safety Protections]Our heater is equipped with ABS V0 flame retardant material shell, overheat and tip-over protection. You won& 39;t have to worry about catching fire if knocked over, as it will cut itself if knocked down. [Fast Heating] PTC ceramic heating elements provide faster and more efficient heating than traditional heaters. 2 seconds fast heating, bring you back to summer. [Mute and thermostat function] The noise of this ceramic heater is less than 45 decibels, suitable for sleep. The heater with thermostat adjustment keeps your room at a comfortable temperature.