Product Description: --Body length:540mm. --Total width:185m. --Main rotor diameter:550mm. --Main Blades diameter :630mm (Foamy material). --Tail rotor diameter: 145mm --Total weight: 580g. --Servo 9g Gyro. --Driven system: 380SD carbon brush motor. --Battery charger. Please specify in your order the voltage for battery charger (220V or 110V). --Frequency: 27, 35 and 72MHz available . --12V 650mAh Ni-HM battery pack and charger. --Common 3D and alterable pitch system --Landing system with flameout function --Tail rotor driven by belt transmission system --Transmitter with 3D model switch, PIT and PLT modulation --Detailed user manual in English.