Features:
Headup display the driving speed and altitude.
Driving time and mileage calculation and display.
Easy setup, PlugAndPlay, no professional installation is required.
Compatible with most car. Use global position system signal guided calculation.
Large and clear display for convenient reading.
Accurate and stable detect.
Easy to install and stable in use.
Five light color adjustable.
Turn on when the car drive, sleep when car stopped.
Intelligent adjustment of display brightness based on the intensity of light.
The Gesture recognition function can switch parameters by waving hands.

Specifications:
Main color: black
Main material: ABS+PC
Item size: 74 * 47 * 65mm / 2.9 * 1.9 * 2.6in
Item weight: 60g / 2.1ounce
Package size: 110 * 110 * 70mm / 4.3 * 4.3 * 2.8in
Package weight: 140g / 4.9ounce

Packing List:
1 * Car Speedometer
1 * Antislip Mat
1 * 2.5m Cable
1 * User Manual
1 * Crowbars