[Open box] [PX6 SIX-CORE] [Special Edition] 12.1" Android 9 Fast boot Navi Radio for Chevy Silverado GMC SIERRA 2014 - 2019

[PX6 SIX-CORE] [Special Edition] 12.1" Android 9 Vertical Screen Six-Core Android Navigation Radio Car Stereo Head Unit Audio Player in-dash Receiver for Chevrolet Silverado GMC SIERRA 2014 - 2019 Please note that the actual items may look slightly different from the pictures. Compatibility | Features | Specifications | Videos | Installation | FAQ | Reviews Relaunched and much Improved, Special Edition, compared with the normally edition, has the following advantages: The special edition has Black Knobs instead of Chrome knobs, more OEM look.  Improved design of knobs and buttons, more sturdy. The two knobs can independently have customized function selected from 5 options: Volume, Driver-side Temperature, Passenger-side Temperature, Fan Speed, and Tune. You assign what function you like.   Has additional sound processing box which gives better sound quality. Automatically switch between OEM and aftermarket sound sources, no longer need to set the audio source in OEM UI first.