LYD W203F1 2.4GHz 4-Camera Wireless Kit with 1 SPY Mini Camera Compatible Upto 3 Additional Cameras 2.4GHZ wireless MINI camera kits ,100m transmission withoutlock mini design,audio and video, upto 4 cameras Camera:2.1x1.4x1inch,1.6ounce,Receiver:3.8x3.1x1.2mm,4.0ounce