Traxxas' radio is an amazing comfortable high-performance system found on the TRX-4 Land Rover and Merc G500, through their Unlimited Desert Racer up to the top end X-Maxx. Works perfectly, steering stays in trim. If you need assistance connecting this, visit the Traxxas website. The powerful, feature-rich radio systems on Traxxas models are completely installed and ready to drive in only a few minutes. Technical Features: 1. 2-Channel TQ 2.4GHz Transmitter 2. This transmitter is compatible only with the #6519 receiver 3. 8.38" L X6.38" W X3.13" H size PROS Durable design Pairs great to the car CONS Can't quite connect with the Docking Base accessory