302240 Features: 1. 6 axis gyroscope， quad rotor aerobatic flying， 360° all-round rotation. Throw to take off， guaranteeing stable flying. 2. Large capacity detachable battery， long time fly. 3. Light controlled， 2 modes to change. 2.4Ghz remote control system， support multiple helicopters flying at the same time， non interference. 4. 3 flying modes: 20% ， 60%， 100% which is suitable for junior， senior and professional level. Technical parameters: Size: 120 x 120 x 30mm Package size: 350 x 175 x 85mm Weight: 35g Body Battery: 3.7V 300mAh Charging ways: USB cable charging Charging time: 40 minutes Flying time:7-10 minutes Gyro: Six-axis gyroscope Remote frequency: 2.4GHz Remote control distance: 30 meters Remote Control Battery: 4 AA batteries (not include) Note: 1. New users please be sure to read the "User Manual" before the trial flight. 2. If the propeller hit obstacles and the rotation stop occurs， please immediately pulled the remote control power lever down to the lowest level to turn off the power， otherwise the huge electric current caused by the rotation stop will burn out electronic components. 3. Please make sure to place the positive electrode and negative electrode of batteries correctly when charging or flying， otherwise， it may instantly burn out circuit board or damage the battery and charger! (Usually you cannot insert if you insert the positive and negative electrode wrongly， unless it is by force!) 1 x Aircraft 1 x Lithium Battery 1 x Remote controller 1 x USB charging cable 4 x Blade 1 x English user manual Packed in color box