Functions: 1) Pitch-axis 2) Roll-axis 3) Collective pitch 4) Motor speed 5) Others: gear switch, 3D conversion, PIT adjustment Specification 1) Main rotor diameter: approx. 630mm 2) Tail rotor diameter: approx. 145mm 3) Overall length: approx. 605mm 4) Overall height: approx. 210mm 5) All-up weight: approx. 560g (battery included) 6) Drive system: 380 SD brushless motor 7) Battery: Ni-MH 12V 650mAh Features 1) Brand new design for the structure; metal main frame 2) CCPM mode with adjustable pitch system 3) One-way bearing system with autorotation landing structure 4) Main rotor driven by 380 SD motor and tail rotor driven by belt transmission system 5) 7 transmitter with multistage electricity volume show on the panel 6) 3D mode conversion switch and adjustable PIT knob Packing item includeing: 1) Dragonfly 7 channel micro helicopter 2) Battery: Ni-MH 12V 650 mAh 3) High speed charger 4) 4 installed mini control servos 5) Receiver 6) Gyro 7) 380 SD motor 8) 2 x foam blades 9) Transmitter Please specify 35 or 72MHz 10) Mode 2 with thottle on left hand side, mode 1 with throttle on right hand side 11) user handbook 12) Color box Outer packing: 6pcs/ctn N.W.: 17.5kg G.W.: 20kg