Brand: Alpha 3 Speed Level Controller Motor Over-Heat Auto Protection Jerk-Free and Wide Area Oscillaton Powerful Motor for Higher Air Delivery S AS Blade for Strong wind,Smooth Oscillation,Safety Protection Unique Oil Reservoir Lubrication for Better Reliablity and Longer Life Warranty: 1 year Product Description A mechanical fan is a powered machine used to create flow within a fluid, typically a gas such as air. A fan consists of a rotating arrangement of vanes or blades which act on the air. The rotating assembly of blades and hub is known as an impeller, a rotor, or a runner.16 remote stand fanNew digital electronics technologyMotor over-heat auto protectionJerk-free and wide area oscillationPowerful motor for higher air delivery5AS blade for strong wind smooth oscillation safety protectionUnique oil reservoir lubrication for better reliability.