Review on 🚗 BLUERICE 7 Backlight Universal GPS Speedometer: Accurate Speed Tracking from 0-120Km/h and 0~80MPH with 85MM GPS Odometer and Speed Gauges by Michael Hall

There really isn't anything I don't like about this speedometer and odometer. I've found that plugging into the ignition causes the odometer and odometer to start at the beginning of the number they broke. For example, if your odometer reads 100 and your trip reads 1.9, and you turn it off when you restart it, your trip will read 2 after a tenth of a mile, but your odometer will not read 101 until the trip has completed 2.9. So I keep mine hot on the battery all the time. It draws 0.03 amps when parked, so a typical modern car battery can easily handle that. It's just as accurate with my phone GPS as it is with these radar markers. Easy to read, responsive enough for regular road driving