• Universal Accessory: Compatible with all vehicles, cars, and trucks. Calculates real-time speed via GPS and displays speed in MPH or km/h, driving time, altitude, and distance. • 5.5-Inch External Screen: The extended screen makes reading easier. Allows you to select the desired speed unit (km/h or mph) and charge via USB cable with 5V output. • Over-Speed Alarm: Adjust the alarm speed with the toggle switch. Issues a warning when the set speed is exceeded. The alarm can be deactivated if not needed. • Rotating Mount: Allows you to adjust the desired angle. A firm adhesive secures the mount to the car console, making it easy to use and increasing driving safety. • Easy to Use: Connect the device to the USB cable and plug it into the car's USB port. If the car does not have a USB port, an adapter can be used. Bicycles can be powered on the go.