3S Fast Heating - PTC ceramic heating with heater can quickly heat up to form hot air in 3 seconds, perfect for getting rid of the cold in an instant. Personalize your warmth with 2 heating modes (High: 900W, Low: 600W). Triple Safety Protection - Built-in automatic overheat protection system will shut down the unit when the heater components overheat (temperature over 235.4°F), tip over protection shuts down the heater when the heater is knocked over (angle over 30°), automatic after 8h no operation -off. (Note: 30S delay shutdown to speed up heat dissipation and improve service life.) Warmer and less noise - This heater produces heat quietly with less than 35 decibels (equivalent to a quiet night). Can be used for indoor bedroom sleeping or working; it is the perfect complement to a bed cabinet and desk. PORTABLE AND ENERGY SAVING - Small size mini heater 195*165*110mm, easy for you to carry and store. Small size is more energy efficient, perfect for small spaces. Safety, protection: flame retardant material, dumping power off