Trade desk Description: ◇ Blade, shakes his head and driven by two motors. ？ Patented connector design, the body more stable. ◇ Strong, medium, weak third gear speed is adjustable. ？ Manual tilt adjustment. ？ Floor to ceiling structure, door height adjustable. ◇ Quality motor heat sink fast, quiet operation. ◇ High quality power cord more security assurances. ？ Sleep-natural wind, free wind, Breeze three wind-class options. ◇ Up to 7.5 hours timing, your choice.