1)Main rotor diameter: 510mm 2)Fuselage length: 520mm 3)All-up-weight: 290g 4)Motor type:370 size 5)Power: 8.4∨ 650mAh Ni-MH battery pack 6)RC: 4CH/2micro servos 3 Point ball bearing swashplate for precise hovering. Pre position servo mounts for easy setup. Carbon fibre flybar and boom for superior strength and durability. High performance main electric drive motor for extended duration flight. Special design rotor blades for superior lift. Unbelievable flight performance 12 minutes on 7cell Ni-Mh battery.