LYD W203E1 Wireless Camera Kit with Upto 4 Channels and 100m Transmission Distance (Silver) 380TVL of horizontal definition, Micro-camera easy for installation, Micro-body with needle hole lens, Wireless camera kits, camera ajustable by manual for the frequency 100m transmmission distance without block Audio monitoring with mircophone in camera Manual tune buttome on receiver to get a clear video