The ARC-51 all in one car video recorder is a system that stores images on-the-spot before/after any accident as well as acceleration data during fender-bending and rear-ending accidents. Built in high sensor CCD Camera Automatically record while start up car engine, auto finish after turn off engine. Recycle record in memory card ,avoid to loss new video image. Provide TFT screen to play & monitoring. OSD menu control panel USB port for connecting to computer Built in microphone to collect voice. Two cameras input for front and rear 1/4 SONY Color CCD image sensor 2.5" TFT color screen Wide angle lens camera SD/MMC slut 00~50cm Focus Range Built in 128MB flash memory Electric Shutter 1~1/30,000sec./Auto PC Interface USB 2.0 MPEG4 file formats(ASF) Wide angle & anti-reflection glass mirror Video recorder processor built-in microphone & Speaker Image resolution 320*240 Operating temp -15 / +50 Power Consumption220~370mA Size 290(w)80(H)27(D) mm DC 12V Power supply Product net weight 300g