SYMA
Syma S109G 3.5 Channel RC Helicopter with Gyro Sold by TM USA
YaSao
YaSao C129 RC Helicopter 4CH Mini Aileronless Helicopter 6-axis Gyro Remote Control Altitude Hold Helicopter RC Aircraft for Adult
Flysky
Flysky FS-i4 AFHDS 2A 2.4GHz 4CH Radio System Transmitter for RC Helicopter Glider with FS-A6 Receiver
cheerwing
Cheerwing S107/S107G Phantom 3CH 3.5 Channel Mini RC Helicopter with Gyro Crimson