Instant Heating - No waiting around or pre-heating needed, this all happens immediately. airchoice Portable Space Heater features 2 quartz radiant heating elements and adjustable thermostat control between the 2 heating settings. Overheating & Tip-Over Protection - When the infrared radiant heater internal components reach a certain temperature that could cause overheating, it will automatically shut off . Once the quartz heater is tipped over, it will shut off automatically. And if the infrared space heater is restored an upright position, the portable infrared heater will reset. Noiseless & Comfortable - This portable radiant heater works noiseless since it doesn't use a fan. It is great for bedrooms and office. The portable infrared heater helps to maintain the natural humidity within the air, resulting in moist, comfortable heat without drying out the room's air. Energy Saving - You do not need to waste energy heating an entire room or preheat a room since airchoice energy efficient space heater work instantly. Almost 100% of the heat created is transferred out, so you can get super-efficient heating for a very low cost. Easy to Carry - Airchoice portable space heater equipped with a carrying handle, which is very convenient to carry or moving. Also, the infrared radiant heater isn't affected by drafts or wind, it is suitable for indoor heating as well as outdoor heating and due to their heat intensity.