DEVO F4 Features: DEVO F4 adopts 2.4GHz Direct Sequence Spread Spectrum (DSSS) technology and features automatic ID binding and ID assignment. It can also be customizedly set as fixed ID code 5.8G real time image transmission USB online update makes you always enjoy the lastest firmware Adjustability of hi-frequency output power enjoys more personality and friendly environment Wireless data transmission between two DEVO F4 helps experience the training function Up to 15-model data can be saved Super large LCD dusplay features direct and convenient setting Shape design accords to human engineering and provides comfortable holding Both rhe length and tension of the sticks can be adjustable DEVO F4 can be freely switched among Modes 1, 2, 3 and 4 Suitable for 4 channel helicopter and aeroplane