Features 1、Wireless transmission mode: no need to set up communication cable. 2、Small and compact, light weight, easy to carry and convenient installation. 3、Response quickly and timely, real-time transmitting and receiving. 4、Using frequency modulation mode, strong anti-interference ability, good image quality. 5、High integration, stable, reliable and ultra long transmitting distance. Specification Features: Wireless transmission mode: no need to set up communication cable. Image, audio synchronous transmission, colorful and black & white are compatible. Small and compact, light weight, easy to carry and convenient installation. Response quickly and timely, real-time transmitting and receiving. Using frequency modulation mode, strong anti-interference ability, good image quality. High integration, stable, reliable and ultra long transmitting distance. Specification: Condition: 100% Brand New Material: Metal Color: As Picture Shown #Transmitter: Transmitting Power: 800MW Working Frequency Band: 1.2G/1.3G Channel: 8 channels, audio and video synchronization Transmitting Distance: 100~400 meters (open and accessible) #Receiver: Working Frequency Band: 0.9G/1.2G/1.3G Channel: button selection, digital display Working Current: 250mA Package Size: Approx. 18 * 15 * 7cm/7.1 * 5.9 * 2.8in Package Weight: Approx. 455g/16oz Package List: 1 * Receiver 1 * Transmitter 2 * Antenna 1 * Transmitter Cable 1 * Audio Cable 1 * User Manual