Universal for All Car Truck Motorcycle Boat GPS Speedometer HUD Head Up Display Digital Alarm On-board Computer MPH Car Modification GaugeProducts Feature: 1.Visiblable The small size of 2.6 inches avoids obstructing the driving sight; which displays the information more clearly than the windshield HUD, it may make you feel more comfortable to monitor the speed and bring more fun to your driving experience. You can choose between white and green,, it"'"s a good view to read the information directly without moving your eyes from the road, no need to paste any reflecting sticker on your windshield.2.Multiple Functions G5 contains multiple functions: Speed ,Driven distance ,Driving direction ,Automatic light sensitivity ,mile and kilometer ,sound alarm Switch ,speeding alarm ,fatigue driving reminder. The speed unit is KM/H or MPH, and the driver can switch freely according to his own habits.3 . Alarm Function Over-speed Alarm and fatigue driving alarm to ensure your safe trip. Default setting is 120KM/H or 120MPH. You can adjust it according to your needs. When the product detects speeding, it will beep to remind the driver.4.Plug & Play Power through vehicle cigarette lighter. The G5 display the real and instance speed with Dual GPS satellite. Compatible with all cars ,no matter which brand or which model all over the world cause G5 is based on the Dual GPS and BeiDou module inside.5. Certified Product CE FCC RoHS Certification, Ensure product quality.