This spy pen camera USB dvr MP9 is a mini video/voice digital video recorder for security use, with 2G/4G/8G flash memory build in, USB 2.0 transfer port. Easy to conceal, simple operation, can record the video/voice clear in 15 meters. http://8eshop.com/spy-pen-camera-camcorder-recorder.htmThe fewest mini DVR in the world which conceals in the pen. And the first mini pen DVR with the function of both kinescope and record. The high fidelity microphone can record the sound around 15?. And the high clear kinescope can help the police and court to get evidence. The fancy aspect, smooth pen writing function, exchangeable standard lead is all durable and environmental. Suitable for any computer and electron device with USB port. USB2.0 standard port, need no drive or circumscribed electric power source neither. 2 million pixels for the spy pen camera.