The 4-channel TQi transmitter combines a full complement of tuning features with the long-range convenience of 2.4GHz technology. Automatic model recognition instantly recalls your settings for up to 30 Traxxas Link-enabled models. The TQi's ergonomic design provides all-day driving comfort, with an internal antenna that is impervious to damage. For even greater control, add the Traxxas Link^™ Wireless Module to the transmitter and download the free Traxxas Link app to your mobile device.