3 dynamic music, the biggest feature 21 channel handle remote control, 16 channels (forward, backward, left front, right front, left back, right back, left rotation, right rotation, left transverse, right transverse, left front 45 degrees, right front 45 degrees, left rear 45 degrees, right rear 45 degrees, etc.) adjustable speed, through the angle of the push rod to control the speed (0-100), through the direction of the push rod to achieve different Function, with left and right fine-tuning function.