Walkera Latest Devo 7E Transmitter, 7 Channel W/ LCD Display Screen 7 Channels Function: Elevator, Aileron, Throttle, Rudder, Pitch, Gear(Throttle Hold switch) and Aux2(Flight Mode switch). Smaller size and half the weight compared to a Devo 10. Charging and DSC ports on back for your PC Sim. Like the rest of the Devo series it's upgradable online with a USB port so you can always get the latest available features that the Techies at Walkera are working on. Good for flying most models up to 500m away or so without any difficulty and keeps the unit simple.