WDR Clear Night Vision The car dashcam with a large f/2.0 aperture precisely and Wide Dynamic Range, boosts contrast and color, the camera captures the license plates and road signs clearly even at night, thus ensuring to get you the best footage. Emergency Accident Locks Variable sensitivity G-Sensor automatically detects a sudden collision and immediately saves the relevant footage and locks it to RO file, ensuring important footage is kept protected. Locked videos will be kept safe from being overwritten. Optional GPS The dash cam supports GPS (not included) allows you to view the Live speed in dash cam during driving. The recorded video will record the location, driving route, time, and speed of the vehicle, which will provide further additional evidence if an accident occurs. Loop Recording Video can be recorded in 1, 3, 5, and 10 minutes intervals. When the storage limit is reached on the memory card, new recordings will automatically overwrite the oldest recordings. Loop recording allows continuous use by writing over old, unneeded footage. This dashboard camera supports up to 128GB of micro SD card (card not included in the package). Key Features Image Sensor: Sony Exmor IMX323 2.19-megapixel CMOS sensor Recording Resolutions: 1080p (30fps), 720p (60fps), 720p (30fps) Operating Temperature: -4°F/-20°C~158°F/70°C Micro SD Card: 128GB support (Max), Class 10 Dimensions: 77 x 51 x 37mm / 3" x 2" x 1.45"