4 CH radio control helicopter with gyro * Product weight: 27g * Product ... weight: 3.6g 5 in 1 controller 4 CH radio control helicopter with gyro net weight is 27g,280W powerful ... 1 controller (gyro, mixer, main motor ESC s, receiver and fully proportional servos)* Battery: 3.7V 120mAh Li- ... box packing. portable 5 in 1 controller 4 CH radio control helicopter with gyro net weight is 27g,280W powerful ...