![]() Mounts that attach to the windshield with adhesive pads are often more compact and very secure, but they can be difficult to remove for repositioning or swapping between vehicles. Generally we’ve found suction-cup mounts to be the easiest to use. Effective mounting system: We looked for mounts that held the camera securely yet allowed us to aim it easily, as well as to remove it easily.Models without a display-generally not our preference-require you to use a phone or computer to set up the camera and to view video footage. Easy-to-read display: Most dash cams have a display that’s 1½ to 3½ inches diagonal displays that are at least 2 inches make it easier for you to adjust settings on the fly and to preview footage.We also preferred models with buttons we could identify in the dark, as well as intuitive menus and a functional companion app. Easy-to-use controls: We looked for models with clearly labeled, easily reachable controls (especially the video-lock button). ![]() Sufficient field of view: We required each model to have a field of view (FOV) in the range of 140 to 160 degrees-wide enough to take in a multi-lane highway or a large intersection without creating a wide-angle effect that makes cars in front look farther away and details harder to see. ![]() To draw power when the car isn’t running, a dash cam usually needs to be hardwired to the car’s fuse box, connected to an external battery, or plugged into the vehicle’s OBD-II diagnostic port.
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