Gator HUDVSS1 Heads Up Display is designed to sit on the dashboard and project speed onto the vehicle's windscreen. This allows you to stay focused on driving, instead of trying to glance down at the factory speedometer when checking current vehicle speed. HUDVSS1 is suitable for vehicles that have a VSS (Vehicle Speed Sensor) wire and also features speed warning, auto brightness control and adjustable speed setting for accurate matching to your vehicle.