Feature 1Multi Functional: Displays a variety of functions including GPS speed, driving direction, over speed alarm, and more. Automatic switch between km/h and MPH for convenient control. 2Automatic Light Adjust: Built in light sensing system, which could adjusts screen brightness for comfortable viewing experience during the day or night. 3Driving Safety: Mounted on the dashboard, does not block your view for easy and safe driving. Displays speed and direction without having to look down while driving. 4High Precision: The HUD speedometer gauge adopts GPS and for BeiDou dual mode chips, which could provide fast refresh speed and no delay while operating. 5Non Destructive Installation: The package includes a pair of double sided tapes, which can firmly fix the gauge on the dashboard, easy for installation and disassembly.Item Type:GPSSpeedometerMaterial: ABS, metalVoltage: DC 5VFunctions:SpeedTimeDriving distanceSingle travel distance Single travel timeNumber of satellites100 km accelerator time Driving direction angleSpeed alarm Fatigue driving reminder MileKilometer switching Automatically adjustedbrightness .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x HUDSpeedometerGauge1 x USB Cable2 x Double Sided Tape1 x Manual