Warm and comfortable: The room heater is user-friendly and has three heating modes - 900W high, 400W neutral, and cooling fan. Safety First: Our space heaters use PTC ceramic heating technology and refractories to provide overheating protection because the heater will turn off when the temperature reaches 167 degrees Fahrenheit. In addition, it has a smart design that automatically turns off when the heater is flipped. Fast and quiet: Thanks to advanced ceramic heating technology, this office space heater is efficient and heats up faster Portable and compact: The personal heater is very compact, measuring only 7.7 x 4.4 x 5 inches, but powerful and energy-efficient, vintage design: this portable room heater is not only efficient, but also stylish and chic