The STX3 3 Channel is proof positive you don't have to spend big to get a precision RC transmitter you can use with an entire fleet of vehicles. Now it includes 3 Channel functions that provide 2, 3 and 4 position settings and proportional control. The easy to grip foam wheel and style makes it easy to hold, plus its versatility and durability makes it ideal for bashers and crawlers. Need to replace your RTR radio system? If you answered yes, the Spektrum STX3 transmitter is the solution you've been looking for. It also comes with the untouchable service and support of Horizon Hobby that has made the Spektrum brand one of the most trusted names in radio control. Note:The STX3 Transmitter is not compatible with DSMR, DSM2 or DSM Marine equipment.