WHAT'S INCLUDED – Rear camera and rear camera cable SIMPLE INSTALLATION – Easily connect this rearview camera to theR4, V1PFlex X4, R316 Series, and RH2 Series dash cameras through one extended cable. ULTRA WIDE ANGLE LENS – Enjoy a 170° degree wide-angle lens that captures sweeping footage of the view in the back. UPGRADE – Rear camera CANNOT be used to upgrade RH2-2 and RH2-3 to RH2-4 Channel. Compatible with Rexing R4, V1PFlex X4, R316 Series, and RH2 Series dash cam ONLY.