See photos for more information.  Fastens over existing interior rearview mirror, and displays view from the front-facing and rearview cameras, individually or at the same time.  Includes all items shown in the photo:  a new 128GB memory card, 12v adaptor, wired adapter for cars without an interior 12v "cigar" connector, rearview camera, mounting straps, and the 4K 10" touchscreen Dash Cam.  The last three photos are from the instructions (the original and a larger, easier to read version), also included.  Purchase price for all items was $100.