TRAXXAS TQi 2.4GHz (4-Channel) Intelligent Radio System Compatible with Traxxas Stability Management Receiver 38-6507R Description: Traxxas Link Wireless Module Pairs TQi with Android 4.4+ or Apple iOS 9.0+ Platforms Sleek 4-Channel Transmitter Design with Internal Antenna Equipped with Traxxas Link Wireless Module for Traxxas Link App Expandability 5-Channel Receiver with Traxxas Stability Management Traxxas Link Model Memory for up to 30 Models Simple 2-Button Programming Interface Built in Failsafe Direct Sequence Spread Spectrum Technology (DSSS) Uses only 4 AA Batteries Traxxas Link Application Provides Visual Access to: Real-Time Telemetry Customizable Dashboards Steering/throttle expo Steering/braking dual rate Servo reversing Endpoint adjustment Profile customization and sharing Manage an unlimited number of models with the Traxxas Link App