Cars Heads Up Display G4 Car HUD Digital GPS Speedometer With Speedup Test Brake Test Overspeed Alarm LED Display UniversalBullet Points:12 Adjustment Modes: The speed head-up display has automatic and manual brightness adjustment modes, which can ensure that your driving is glare-free.2Satellite Icon: There is a satellite icon on the speed head-up display. It will stop flashing the GPS light after finding the satellite. When it is always on, it means it is in normal use.3High-definition Display: The screen of the digital speedometer is 2.2 inches high-definition display, small and exquisite. The HD LCD display is clearer and more intuitive.4Simple Operation: The vehicle"'"s digital speedometer is powered by the onboard charger (supplied), plug and play, no professional installation is required.5Automatic Start/Off Machine: Digital speedometer starts and stops with the car, effectively protecting the car battery; maintaining the manual switching mode makes it easier to control the head-up display.Product Description: Smart Car Digital Speedometer (Head-Up Display) System - Hassle-Free Plug & Play Operation - User-Friendly Control Interface - Compact Dashboard/Console Mount - Digital Multicolor.LCD display shows speed, distance, travel time, voltage and more - GPS Navigation Direction Compass. Automatic synchronization with engine ignition, power on/off - unique acceleration and braking test functions.USB Cable Powered - Universal Vehicle Compatibility Car, Truck, Van, Trailer... Features: Name: Digital Speedometer Model: G4 Material: ABS+PC Screen Type: LED Applicable models: Universal Appearance size: 5.2*5.2*1.4cm/2*2*0.5inch Product List: Digital Speedometer*1 USB cable*1 Double-sided tape*1 Suction cup holder*1