GPS Speedometer Head-Up Display, Green LED MPH for Car Truck

<p>A plug-in GPS digital speedometer that shows your driving speed in large green LED digits with an MPH label. It takes its speed from GPS satellites, so it does not connect to the engine, the circuit board, or the OBD port. The unit has no buttons and needs no setup. Plug the USB cable into a 5V USB port in the vehicle, or use a car charger adapter. It switches on when it detects motion and turns off after 3 minutes of being fully still.</p><ul><li>Display: green LED digits, readable day and night</li><li>Size: 3.15 in wide x 2.13 in tall x 1.22 in deep</li><li>Power: USB 5V</li><li>Positioning: GPS plus Beidou dual chipset, 10 Hz refresh</li></ul><p>Allow 1 to 3 minutes after power-up for satellite lock. Test it with a clear view of the sky, since indoor or parking-lot tests may not show the correct speed. It fits cars, trucks, buses, motorcycles, and other vehicles.</p><p>Each unit is one GPS speedometer display.</p>

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