SinoTrack HUD GPS Speedometer Universal Car Heads-up Display 2.7inch MPH Speed Meter with Compass Over Speed Alarm for All Vehicle USB Connect Plug and Play

Muito bom!!

This GPS works very good and is very accurate. This was a very good buy and I am not disappointed with it. It has a big face, but I would say, it's the best size for my pontoon boat.

I gave this Speedometer attachment to my Friend and he Says it Works Perfectly and is Accurate .

I purchased this for my 2nd Vehicle that is mainly used by my son. Now I like driving the 2nd car more probably because of this little gem! I like this much better than the window reflection type I installed on my 1st Vehicle. This unit lets you see your speed quickly and easily without taking your eyes off the road. It auto dims when the ambient light is low and I don't have any issues with glare. I like that it has a great deal of customizable settings. For instance. I have the over speed setting set to flash rather than beep, and it is set to the speed I want it. All and all, this is a great device for a great price. I will likely get one for my other vehicle!

Works good, only complaint is the slow starting when you first plug it in, but it seems pretty accurate speed wise.