Specification: Main rotor diameter: 515mm Fuselage length: 520mm All-up-weight: 280g Motor type: 370size Power: 11.1V 1000mAh Li-Poly battery pack RC: 6CH/3 micro servos Feature: * Ready to Fly. 95% Pre-built. * High performance main electric drive motor for extended duration flight. * Fast speed servo mounts for easy set up. * Collective pitch rotorhead for 3D flights. * Autonomy of 15 minutes with 11.1v-1000mAh Li-Poly battery. * 3D electromotion helicopter with the CCPM immobile system. * Light weight prebuilt cabin with quick fasteners will make you fly happy. * Symmetrical wood blade will be damaged uneasy, and will make you fly with easy.