The GTR 200 panel mount comm radio is for experimental and light sport aircraft and offers a slim design and powerful features, including advanced auto-squelch, 3D audio, stereo intercom, stereo music input, alert inputs, best-in-class standby frequency monitoring, on-screen frequency identification, and much more. This one was removed for an upgrade, but is a good working unit (one corner on back is slightly bent and a couple of scratches) and will give you hours of use. Unit only, no rack or wiring.