Digital Universal GPS HUD Speedometer Display GPS Head Up Dispaly Speedometer Car Truck Odometer with Over Speed Warning/Car Clock / 5.4in Large Screen KingNeed C90

this thing really works and all you have to do is plug it in to a usb power slot; amazing the technology involved in this device and the affordable price. i put it on my boat for a new speedo.

This is a great speedometer that uses satellite position technology (GPS) to determine speed. I got it to help control the speed of my 4 wheeler when putting out pasture grass seed or seed for deer food plot so the coverage is consistent. Only need a cigarette lighter type electric outlet and usb plug to power it, which are readily available and easy wire-in install. Then just plug it in and go!

This digital speedometer was 3 to 4 miles off from the correct speed. But it looked good.

once I figured out how to setup with the finicky one button switch I got what I wanted. so far so good. my only con is the lack of understanding daylight savings time, it's always one hour slow. try to adjust to no avail. waiting for e.s.t. time to show correct time. GPS takes about 3 minutes to connect

Works great, mounts on my dash easily and is fairly accurate, as far as I can tell with the electric speed testers set out on the road. Very happy with this product!