【Extra Long Range Stable Operation Signal】AHD tech with extra long distance picture transmission, high rate and anti-interference. In the actual usage, refer to CM1 system, it wont happened delay within 100m/328ft after our testing on the open area. No interference, upgraded long range wireless signal can stay smooth and clear even car speeds up to 75Mile.(mentioned on the product description about the difference of AHD/HDCVI/HDTVI technology) 【Newest Capacitive Touch Button】Updated 7 Inch Backing Up Monitor built-in capacitive touch button less the possibility of water-in and make this high definition rearview screen more duarble, extended service life. Built-in 32GB recorder AHD reverse recording monitor with updated 1080P high resolution can make you rear view/continuous use more safety.