AUTO-SHUTOFF PROTECTION: This heater was designed with a tip-over auto-shutoff function, if it accidentally turns, the heater automatically stops working. Put the heater in a standing position and it will automatically start working again. This feature allows you to use the heater in any room and situation--- resting in the living room, working on the computer, working in the office away from home, you can set the direction of the heat according to your need.FLIP UP & DOWN 180°: This electric heater under the desk can be set: Flip Up and Down 180° and can bring heat directly to the feet, knees, or directly to the body. This under table heater comes with a 50-inch 110v plug.SUPER QUIET: This 110v heater is very quiet in order to not distract you from your work. This under the desk foot heater has a fan that imitates an airplane turbine and at the same time, powerful heating. It will bring a new experience that you haven't had before.FULL WARMTH FOOT WARMER: This heater has three temperature settings: cold air; hot air 1= 200 Watts; and hot air 2 = 300 Watts. You can adjust it to a comfortable temperature at will. This foot heater under desk can cover and bring warmth to your hands, feet, knees, and body conveying a feeling of wearing warm stockings.PACKAGE INCLUDES & HEATER GUARANTEE: Upon delivery, the package will include a foot heater, manual, and a letter of thanks. Please read the manual carefully before use. If you have any questions about this foot heater, please contact us and we will do our best to resolve all your questions. Sincerely, Elite_Merch