Highlights Hardback edition R/C helicopter with metal case for good protection. Made of alloy metal, anti-shock and fly safely. Can fly over 7-9 minutes if fully charged. Built-in latest upgraded gyroscope. Has 360 degree accurate orientation and 3-Way remote control. Suitable for children above 14 years old. Ship Randomly. General Spec Model YD913 Type R/C helicopter Channel 3-channel Material alloy Gyro support Function forward, backward, ascending, descending, convolution and turn left or right function. Flying Time 7-9 minutes Charge Time about 60 minutes Compatibility suitable to fly indoor and outdoor Battery for Helicopter built-in 3.7V 700mAh rechargeable Li-poly battery Battery for Radio Control 4*AA battery (not included) Accessory 1*charger, 1*antenna, 1*disc, 2*main rotor blade, 1*tail rotor blade, 1*screwdriver, 1*transmitter, 2*middle wing