GPS Head-Up Display Speedometer (quick and easy installation) Heads-up display - projects vehicle speed on windshield with adjustable mounting bracket to set desired angle Automatic brightness adjustment to suit ambient light level No installation needed - simply plug into your car's cigarette lighter Speed warnings - you can set limits to receive speed warnings for either Km/h or MPH (*Does not detect local speed limits) 1 year warranty - Contact Human Creations or the Amazon seller for help anytime