2.4G Wireless Hidden Camera Kit 1/3 CMOS 380TVL Image Sensor AV & USB Receiver Supports Camera built-in The Smoke Detector With Microphone from China

Look at this Wireless camera
This is one of my favorite products I ever bought from china shop.
2.4g wireless hidden camera kit with dual output mode, USB for PC and AV for TV/Monitor, built-in microphone for audio monitoring

http://www.chinabuye.com/2-4g-wireless-hidden-camera-kit-1-3-cmos-380tvl-image-sensor-av-and-usb-receiver-supports-camera-built-in-the-smoke-detector-with-microphone