Ceramic heater: The ceramic heater uses high-quality ceramic heating elements with excellent thermal conductivity. It only takes 3 seconds to heat up after being turned on, and the heating is fast and efficient. Overheat protection: Designed for your safety. An automatic overheat protection system shuts down the unit if the fan heater assembly starts to overheat. Size: The maximum size of the electric heater is 4 x 4.5 x 10.2 inches (10.3 x 11 x 26.2 cm), the low noise will not disturb your rest and reading, providing you with a quiet space. Tilt protection: If the electric heater is tilted forward or backward, the anti-tip switch at the base of the heater will automatically cut off the power. Heaters should always be placed on a flat surface. Convenient Carrying Handle: The portable heater features a convenient carrying handle on the top, making it easy to move to any location in your home or office.