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 (TRAC6511) 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
REQUIREMENTS:
- AA Batteries: Four for transmitter
- Servos and receiver of modelers choice
COMMENTS:   Traxxas Link Wireless Module is not included and must be purchased separately. iPhone, iPad and iPod touch are not included
Used with permission, copyright 2016 Traxxas/Tower Hobbies, Inc.  Copyright 2016 Brey Corp. t/a Hobby Works