1 DC brushless speed regulating motor: the real ideal speed regulating motor, fast speed, high precision, very low heat, starting torque, small starting current, good speed regulating performance 2 Mechanical transmission: using planetary gear structure, transmission efficiency of 95%, strong bearing capacity / impact resistance, conducive to speed regulation and torsion increase Control circuit: simple control unit, good stability, and few fault points 3 Super strong overall luxury shape design, independent functional unit structure, double seal protection 4 Speed adjustment, high precision 5 Speed / torque can be set online