ZV technology

ZV technology is Zoomed Video technology, which is a new PC card standard announced by Toshiba, Sony and some American chip companies in 1995. It can reduce the multimedia performance gap between laptops and desktops. The use of ZV decompression cards or video cards can achieve MPEG-1 compression playback, MPEG-2 full-screen playback, full-motion video, video capture, TV-tuner support, and video conferencing capabilities at a video data transfer rate of 7 MB/s. Because it is the PC Card bus directly from the PC Card to transfer data to the video and audio system, this can reduce the number of video and audio signals through the CPU and the system bus, to avoid excessive CPU, PCI bus resources, improve the speed of video data transmission At the same time, the CPU burden is also reduced to greatly save the power consumption.

The dual-lens Dash Cam means that the dash cam has 2 cameras. 
The common dual-recording driving recorder has one camera to record the driver's front view, 
and the other camera to record the external conditions behind the vehicle, including the outside road conditions. Vehicles, etc., 
can deal with situations such as rear-end collisions.
The front and rear two-way dash cam can record in all directions.