Features:1)Coaxial structure effectively offers stable flight and easy operation.2)The combination of prompt servos and 2 x N30 strong magnetic motors ensures various flight courses.3)It is possible to adjust the servo extent and the sensitivity of the built-in gyroin the 3-in-1 receiver circuit. Customized fine adjustment makes your flightmore perfect.4)The height-volume 7.4V 480mAh Li-polymer battery pack is equipped with charging protection function. 5)Flight time: 8-12min6)Functions: forward, reverse, rise, spinIncludes:Helicopter, transmitter, charger, 7.4V 480mAh battery pack, pair of extra upper and lower main rotorRequires:8 x "AA" batteries (not included)Specifications:1)Main rotor diameter: 268mm2)Drive system: 2 x N30 (strong magnet)3)All-up weight: 121g (battery included)4)Overall length: 203mm5)Battery: Li-polymer 7.4V 480mAh6)Servo: weight 8.55gSpeed 0.1 sec/60 Torque 0.5kg/cmDimension 20x8.5x22.5mm7)Inner packing: 1pc/window box8)Out packing: 6pcs/ctn9)Carton dimension: 68.0x42.5x64.0cm10)G.W.: 11.5kg N.W.: 9.0kg producing area:China payment:T/T, L/C at sight