... not burn out easily, when the temperature reatchs 110 degrees, will automatically shut down after cooling and then continue to work.2 ... . Digital infrared sensor, put into the foot will open, move out will close. 4. Automatically for polishing,dusting,oiling and stop. 5. Dusting ... to me, or contact me as below.Shoe polisher Picture: automatically shoe polisher 0086-13937128914