Features:

-Real-time measurement of the vehicle roll and pitch angle during driving, the range is -40°~ +40°.
-The current altitude of your car can be measured.
-GPS satellite positioning, make sure you don't go in the wrong direction. Perfect for traveling and driving adcentures.
-Obtain the current driving speed, with over speed alarm function, as well as display the local time.
-Real-time voltage monitoring, can avoid safety hazards caused by too high or too
-low voltage, prolonging the lifespan of the battery.
-Suitable for all vehicles, such as vans, trucks, buses, cars, off-road cars, SUV, and other Vehicles.

Specification:

Power supply: DC10V~30V;
Operating temperature: -40°C~+80°C;
Pitch angle: -40°~+40°;
Roll angle: -40°~+40°;
Voltage measurement range: DC10V~30V;
Voltage measurement accuracy: 0.5V;
Speed accuracy: ＜0.36Km/h;
GPS data refresh rate: 1s;
GPS hot start: 1s(AVG);
Wireless transmission frequency: 2.4GHz;
GPS cold start: 32s(AVG);

Package Included:

1 x Car HUD
1 x Cigarette Lighter Power Cable
1 x Refitted Power Cable
1 x Holder

About Inclinometer only:

Feature:

-100% brand new and high quality.
-With free rotation type, its high degree of sensitivity, providing slope and inclination.
-Learn road conditions, increase traffic safety.
-Ergonomic design, adjustable viewing angle, fine workmanship.
-It can accurately show the exact degree downhill, uphill.
-Details can locate the slope angle of the left or right.
-Adjustable stand can be installed in any position, as long as you can maintain a balance.
-Built-in LED lights.
-Practical and durable