Review on Universal Car HUD Head Up Display - ACECAR Digital GPS Speedometer With MPH Speed, Compass, Fatigue Driving Reminder, Distance, Altitude, Overspeed Alarm And HD Display, Suitable For All Vehicles by Marcus Hardin

I use this on my motorcycle as a backup speedo and to tell me which direction I'm heading. Overall it's a really cool and functional speedo. Has a very handy suction cup mount which works perfectly inside my wind screen. Ran a wire to my USB adapter from my Battery Tender and it works great. Very accurate and finds satellites very easily and quickly. It's hard to read in the daylight but I'm using it on a motorcycle so I imagine it is much easier to see inside a vehicle. Really cool device, just hope it lasts and that the mount doesn't break off or come apart.