Model: W208G4 Key Features: >Switch the receiver's channels by remote controller. >380 TVL of horizontal definition. >Micro-camera easy for installation. >4 cameras exchangeable for watch. >Receiver with 4 channels exchangeable by auto & manual. >100m transmission distance without block. > Audio monitoring with microphone in camera. Packing: Package: Color Box Pcs/ctn: 20pcs/ctn Ctn Size: 504037cm Accessories: Receiver 1pc Wireless Camera 1pc Power adapter 5pc 12V 500mA for receiver 8V 500mA Mini Camera A/V cable 1pc Manual 1pc