LYD W812F1 2.4GHz Wireless Kit with 300-500m Range 1 Night Vision Camera Compatible Upto 3 Additional Camera 2.4GHZ wireless camera kits 300-500m long transmission distance 15-20m night vision 4chanel available Camera:4.1x2.7x2inch,8.6ounce, Receiver:3.8x3.1x1.2mm,4.0ounce