With v2 firmware update, correcting many flaws of the previous 9X, plus inbuilt 2.4Ghz (no daggy second antenna) this is a quality, reliable 2.4Ghz system suitable for beginners and pro pilots alike. Get that locked-in feeling that only 2.4Ghz glitch free technology can provide. Ultra fast reaction times and interference free control of your model is only achievable with this 2.4Ghz technology. Without a doubt, the best value 9Ch system available! Number of Channnel: 8ch ppm/9ch pcm Display: 128*64LCD Support Type: Heli/Acro/Glid Support user: 8 Stick model: 4 Encoder type: ppm/pcm Subtrim: Yes Simulator Interface: Yes Buzzer: Yes Low Voltage Show: Yes Required: Battery Included: Turnigy 9x 9Ch Transmitter Turnigy RF9X-V2 module Turnigy 9X8C-V2 8-channel receiver Important: The TURNIGY 9X has been reflashed with the new v2 firmware, fixing previous menu and mixing issues. This firmware flash is only available from our TURNIGY 9X system as we flash each unit in our office before it is shipped. Purchases of any other rebranded version of the TURNIGY 9X will not have the latest firmware and patches(even the OEM factory does not have these updates). NOTE: "SWITCH ERROR" means you have one of the switches in the wrong position when you turn the radio on. It is not a fault.