Universal USB Digital Speedometer with Compass 2" Car GPS HUD Head Up Display in MPH KMH Overspeed Alarm Fatigue Driving for All Vehicles Mini Sized

OverviewUniversal Fitment: Solid mini-sized and high-precision design for universal fitment in all vehicles without OBD or connection issues. Works well in sedans, SUVs, off-road vehicles, and more. Built-in dual +Beidou module to avoid draining the vehicle battery system. Rich Display Contents: Clear green LCD display with speed reading in MPH or KMH, time, and compass. Light sensor system for automatic brightness adjustment. Overspeed alarm (default value 120) and fatigue driving alarm (default value 4 hours) with "beep beep" sound. Customizable settings by pressing the button on the gauge top. Instant Reaction & Update: +BeiDou dual-mode fluent chip ensures quick and accurate updates at a rate of 10HZ. Real-time car speed display without delays. Speed calibration option to address any reading errors compared to the dashboard value (± 9 in KMH or MPH). Dual Installation Base: Occasion 1: Connect to the USB outlet in the car interior. Place the gauge on an anti-slip mat without support or use the adhesive base for stability. Occasion 2: Install on the handlebar of motorcycles, bikes, UTVs, ATVs, golf carts, etc. Note that the speedometer gauge may take about 5-10 seconds to obtain the satellite signal and activate after the engine is on (hot start).