This is the Traxxas TQi 2-channel 2.4GHz transmitter. Receiver and servos not included.

Features:

Can be equipped with the Traxxas Link Wireless Module and used with the iPhone, iPad or iPod touch* to create a graphical user interface for the vehicle

Simple two-button programming interface

Built-in failsafe Automatic model recognition recalls settings for up to 30 Traxxas

Link enabled models

Adjustable throttle and steering endpoints

Multi-Function knob can be programmed to control

Steering Sensitivity Throttle Sensitivity, Steering Percentage, Braking Percentage, or Throttle Trim

Includes:

Traxxas TQi 2-Channel 2.4GHz Transmitter Requires: Four AA batteries for transmitter, servos and receiver of modeler's choice