The Spektrum™ DX4S transmitter represents the pinnacle of sub-$200 sport level transmitters. In addition to stunning looks and extremely comfortable ergonomics, the DX4S offers an array of features and programming options typically found in models costing hundreds more. Preset mixes like 4-wheel steering, integrated ABS (anti-lock braking system) and dedicated AVC (Active Vehicle Control) programming push the DX4S to the top of the list of many mid-level sport users and club level racers. The units integrated antenna, backlit display and easy to use navigation make it one of the best looking transmitters on the market. In addition, the transmitter comes with the popular and versatile SR415 DSMR 4-channel receiver.