Features: 1. The micro turbojet fan adopts high-quality imported high-speed bearings, new CNC metal turbine, brushless motor and manual  winding motor to generate more than 52+m/s pressure and wind speed, and can adjust the rotation speed according to different  needs to achieve the desired effect   2. Wireless design, long battery life: built-in 4000mAh battery, wireless operation can be achieved without external power supply,  and a charge can reach about four hours   3. High quality structure, the machine has four shark gills, active heat dissipation, hot air can effectively discharge the cabin, can .