High Elastic Splint Can Stand Can Clip Can Hang High Efficiency Three In One. Secure Encryption Grid Intensive Grid Uniform Air Supply Security Protection. Back Gear/shake Head Control High And Low Gear Adjustable Automatic Shaking Air Supply. Insulated Plug Safety Insulation Suitable For A Variety Of Board. Automatic Head / 90 ° Adjust Up And Down. Right And Left Automatic Shake Head Air Supply Up And Down Adjustable Angle. Small Operation Sound Quiet And Comfortable. First Gear Wind Gentle Sleep Two Wind Motor Quiet Operation. Motorunning Smoothly Low Noise Lowesistivity Fast Heat Dissipation.