Designed to be Wild and Furious, Ultrafly Extra 330S 25E is the Ultimate Aerobatic machine you want to show off your outstanding talent and feel the rush with! Install with the 500 watt Ultrafly H/12 or H/18 motor, you will get unlimited vertical power at twice the thrust over weight. Just feel it and you know. The unique airfoil allows this beautiful model to perform extremely low speed maneuvers. All the difficult Aerobatic and 3D maneuvers become easy and totally under control. Hard landing impact and extreme maneuvers is no longer a night mare for the fuselage and wing have been strengthened. And a special easy access batter bay makes changing battery a piece of cake! The detachable main wing is another thing you want for easy transportation. Just open the box and enjoy the delicate & precision works from Ultrafly! You need a 4-6 channel radio system, 4 micro servos, a 35-50amp (500 watt) brushless ESC and 2200-3000mAh 3S Lipo batter with 40amp discharging capability to feed this wild horse!