Spec. 
Length:660mm
Height:230mm
Main Blade Length:325mm
Main Rotor Diameter:700mm
Tail Rotor Diameter:150mm
Motor Pinion Gear:12T/13T (Not included)
Main Drive Gear:150T
Autorotation Tail Drive Gear:106T
Tail Drive Gear:25T
Weight(w/o blade):450g
Flying Weight:730~760g 
Upgraded belt pulley gear & shaft. (No-slippage)

Required items.
Brushless Outrunner Motor
Servos, Gyro, Receiver and ESC
Lipoly Battery (2200mAh 3S)