OE Style 4.3" Rear View Mirror Monitor with OnStar for Chevrolet, Buick, GMC and Cadillac

4.3” high resolution 16:9 LCD screen Auto select reverse camera display Auto brightness LCD Dual video inputs Auto switching PAL | NTSC Special Mounting Brackets for General Motors Designed to replace factory rear view mirror Ultra-high brightness Display OnStar Services-Empowering you to stay connected to your world. Emergency Automatic Crash Response, Emergency Services, Crisis Assist, and Roadside Assistance Security Stolen Vehicle Assistance, including Remote Ignition Block, Stolen Vehicle Slowdown, and Theft Alarm Notification Navigation Turn-By-Turn Navigation and AtYourService Connections OnStar with 4G LTE and Wi-Fi hotspot and Hands-Free Calling. Vehicle Manager Advanced Diagnostics,OnStar Smart Driver, Remote Access and Location Manager