Wisedeal F30 Dual-Lens 2.7" Dual-Camera Night Vision HD DVR Car Vehicle Black Box Driving Camcorder Video Recorder w/ Russian / English Voice / TV Out - Black SOS emergency button - press SOS button in case of emergency, the machine will automatically save 2 files of the emergency as non-deletable files. 2.7"16:9 HD display, dual-lens can rotate by 180 Fast switch to the night-shoot mode, the mode is very effective to solve the overexposure problem, and thereby to see the license plate as clearly as possible. Unique and intimate design combining the wide-angle lens 120 degree and telephoto lens, so it is no longer just a simple decoration and the increase of camera angle. The machine can automatically detect and start the video when the vehicle starts, and support the video-recording while charging.