The collective pitch rotor head, stiff WOODEN blades and lipo battery means you can fly indoors and outdoors even in moderate wind. Fly upside down as your skills progress, the best collective helicopter for the price you can get! Esky HoneyBee CP2 is an excellent ready to fly rc helicopter and we highly recommend them for both beginner and advanced flyers alike. Complete and ready-to-fly helicopter includes everything even 8 "AA" batteries for the transmitter. Upgraded motor and symmetrical wooden blades are pre-installed at the factory for full 3D performance right out-of-the box with no upgrades required. It comes with a Li-Polymer battery pack for EXTRA longer flight times and also features automatic safety precautions such as gradual throttle starts and built in fail safe . * This helicopter is suitable for intermediate pilot or pilot who wants to try inverted fly and 3D flight. * 120 deg CCPM system provides precise movement if comparing with the traditional mechanical mixing since there are less linkage/push-rod in the helicopter,and weight is greatly reduced. * Bell-heller mixing greatly increase the sensitive of the whole helicopter, which provide good aerobatic responds. * O-ring inside the center hub reduce oscillation of main blades * 11.1V high capacitance Li-Po battery provide enough power for any aerobatic flight(about 20 min flight time per full charge). * Light and hardened wood blade provide great lift, only weigh 11g. * Metal ball swash plate has improved the stability and sensitive of the whole machine. * With length-adjustable servo push-rod, precision sub trim can be easily set. * Separate main shaft and main gear reduce repair time and noise. * Extended tail boom, reduced the load of tail motor. * Weight is a key to a EP heli, lightened skid set, main gear, main frame and canopy reduce the load of whole heli. * Provide excellent performance outdoor and indoor.