... 4Ghz radio, Built in Gyroscope, Servos and Electronic Spe rc helicopter:1. Durable and Precise;2. Anybody can fly well; ... radio, Built in Gyroscope, Servos and Electronic Speed Controller;4. Lightweight Design , Portable, Easy and High Safety on Operation;5. ... at Gym, household and Office;7. 3D Effect with High Flying Performance. Sky Tango RC Helicopter, 4-channelled Remote Control Aircraft With Gyro