Features >>> 2.4GHZ High quality Color CMOS sensor for crisp, clear images Built-in microphone for audio monitoring The camera build in li-on battery providing three hours portability Supports up to 4 camera with Manual and Auto switching Manual/Auto switching between channels Compact, Lightweight and Super Mini size Package Including: 2.4GHz Wireless Outdoor Camera with IR and Microphone 2.4GHz Wireless Flip-type 4-channel AV Receiver A/V Cable Antenna for Receiver 8V Power Adaptor for Camera 9V Power Adaptor for Receiver Battery Clip