Digital Speedometer for Car,Portable GPS Speedometer MPH with HD Large Font Display,Universal Car Speedometers Display USB Plug & Play,Real-Time Speed for SUV Truck

Satellite Speed, Simple Setup, Drive With A Clear ViewProduct PropertiesColor: BlackSize: 2.98 x 1.96 x 0.63 inchWeight: 3.27 ozMaterial: ABS + PCPackaging: 1 x Car Speedometer + 1 x Instruction Manual + 2 x Anti-skid Pad + 1 x USB CablePackage Sizes: 4.07x2.98x2.95 inchProduct Features1. A new satellite-based speed detection model shows velocity in miles per hour. It does not require any modification to the vehicle's hardware and works across a wide variety of car makes and models2. The interface is simple and the digits are large for clear reading. Its small footprint allows placement in various spots on the dashboard without interfering with the driver's forward view3. Power is supplied through a USB port or a cigarette lighter adapter. The unit turns on and off automatically in sync with the vehicle's ignitionProduct Parameters1. Input Voltage: DC 5V 2. Input Current: DC 50-120mA power bank for power supply is supported3. Working Temperature: -30 to 70 DegreesProduct FunctionsUsed to collect speed data from satellites to test vehicle speedsCaveats1. The error of the car speed is between 1%-5%, its speed is basically the same as the speed of the acceleration radar, but there is still a certain degree of error2. Easy to install, only need to connect the USB port and this product, at the same time in the car power USB interface connection can be used3. The first time you use it, it may take 10-30 seconds to receive the GPS signal, can not be used underground, indoor, tunnels

• Satellite-Derived Speed: This gps speedometer collects movement data from orbiting satellites to display current velocity. The readout updates in real time and appears in M/PH. A small variance of 1% to 5% may be observed under certain driving conditions or signal environments
• Power via USB Without Wiring Changes: The speedometer draws electricity from a standard USB port or cigarette lighter adapter. There is no need to splice or modify any factory wiring. The device turns on automatically when the engine starts and powers down once the ignition is switched off
• Simple Black Housing with Clear Font: This gps speedometer mph features a compact body and uses large green numerals on a dark background. The unit sits on the dashboard without obstructing the driver's forward view. Its understated appearance blends easily with most vehicle interior styles
• Suitable for Many Vehicle Types: The digital speedometer for car works with sedans, SUVs, trucks, and other motor vehicles. It functions independently of the factory instrument cluster and provides a consistent reading regardless of the vehicle's age or brand
• Setup and Signal Limitations: This digital speedometer is easy to install—just plug the USB cable into a power source. Initial GPS lock may take 10 to 30 seconds. Use is not recommended inside indoor garages, underground passages, or long tunnels because satellite signals cannot reach the receiver there