Car HUD Head-Up Display, OBD2/GPS Digital Speedometer with Windshield Projection, Overspeed Alarm & Fault Warning, Universal Auto Accessory (M1 GPS / M3 OBD)
Car HUD Head-Up Display, OBD2/GPS Digital Speedometer with Windshield Projection, Overspeed Alarm & Fault Warning, Universal Auto Accessory (M1 GPS / M3 OBD)
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Keep your eyes on the road while still tracking your speed. This head-up display projects key driving data directly onto your windshield, so critical information stays in your line of sight without glancing down at the dash.
Key features:
Windshield projection – displays speed and alerts directly in your field of view for safer driving.
Two model options – M1 GPS version reads speed via satellite for easy installation in any vehicle; M3 OBD version connects to your car's OBD2 port for speed plus engine diagnostics.
MPH/KM/H switching – toggle units to match your preference.
Fault warning icons (M3 OBD) – alerts for engine issues, battery status, and other vehicle diagnostics right on the display.
Overspeed alarm – warns you when you exceed a set speed limit.
Large digital digits – bright, easy-to-read numbers visible even in daylight.
Simple dashboard mounting – sits on the dash with no permanent installation, easy to move between vehicles.
A straightforward way to add real-time speed and vehicle diagnostics to any car without a full dashboard upgrade.
Technical Description ＋
1.Multi function: Speed, Water temperature, Voltage.
2.Engine icon, Water temperature icon.
3.Voltage icon, Fatigue driving icon.
4.Light sensor: HUD can automatically adjust the brightness according to the environment.
5.Speed unit: MPH- mile, KM/H- kilometer.
OBD Troubleshooting:
1.The screen without any display, and no power
Please do these operations: If OBD cable is tight enough,pull the OBD cable out several times. Try another car to test.
2.When HUD power on,HUD only shows the car voltage and be automatic power off after 30 seconds driving.
HUD is only available for cars with OBD2 and EOBD agreement(European:manufactured after 2008, Other region: after 2008)
HUD Products don’t support JOBD and OBDI,if your car is these agreement(manufactured before 2008),please replace with other cars that comply with OBD2 interface.
3.Wrong operation lead to crashes
A. If your car equip with other OBD devices (parking sensor, TPMS monitor, car window closer,ELM27)
B. If your car had been modified(central control navigation, electronic throttle controller, speed cruise, refresh the computer system, One-click start-up, keyless entry, remote startup)will cause a crash, unplug other OBD devices and do the factory settings (more details please refer to the menu table), unplug the one-point two-wire and use the HUD alone or replace with other cars.
4. Inaccurate speed
In the case of power-on, long press the 'M' button in to enter into menu option, menu displays 1,parameter displays 107.Fine tuning of the values according to the difference between HUD and car instrument(Example: the instrument displays 100 KM but HUD displays 105KM,then calculation should be default value 107-5=102.Long press the 'M' button to save your adjustment and exit.
5. The cars are with Automatic start/stop system and Hybrid electric vehicle
After the car starts and stops automatically, the engine stops running. The HUD shuts down after 20 seconds. The turn off voltage can be adjusted to 1V in Menu 10.
6.HUD can not auto power off(RPM or Speed not at 0)
When HUD is power on, long press the button in to enter into menu, set the voltage from 0 to 13.2V or 13.5V(Menu 10).HUD will turn off after 3 minutes.
Scope of application: gasoline vehicles with OBD2 agreement produced in the United States after 2008, and gasoline vehicles with OBD2 agreement produced in other regions after 2008.
Incompatible: not suitable for gasoline-electric hybrid and diesel vehicles, pickup trucks, RVs, cars with modified car computers, not suitable for Swiss Volvo, for Chrysler Group, for all brands of Fiat Group models.
Friend, after installing this instrument, it needs to wait for satellite signal reception, which takes some time. This is not a problem with the product. If there are any after-sales issues, please provide a video. Only providing photos or videos unrelated to the instrument is insufficient evidence and the buyer needs to bear the responsibility themselves.
Packing include :
1 x HUD Head-up Display
1 x OBD line
1 x Reflector
1 x Non-slip double-sided sticker
1 x Instruction
Please note:
Please disconnect the HUD if you don’t drive for more than a week.Generally speaking car battery’s standby time is 1 month,we kindly suggest you to unplug the OBD device when the car is not used for a long time due to different vehicle conditions.
M1 GPS
Display functions:
1.Light sensor: HUD can automatically adjust the brightness according to the environment.
2.Satellite icon: After the satellite is found, it stops flashing and goes out before it can be used normally.
3.Compass: N (North) E (East) W (West) S (South).
4.Buzzer
5.Vehicle speed display: display the current vehicle speed.
6.Speed unit: MPH- mile, KM/H- kilometer.
Warning:
Product working voltage is 5V, and it is forbidden to use a voltage higher than 5V for power supply.
Keep your eyes on the road with this HUD, projecting your speed directly onto the windshield in a clear, easy-to-read digital display. Choose between the M1 GPS model for simple speed tracking or the M3 OBD2 model, which adds real-time alerts for engine temperature, battery, and other key vehicle systems. Bright digits stay visible even in daylight, showing your speed in MPH or KM/H at a glance. With easy plug-and-play installation, it's a smart, safety-focused upgrade for any driver — order yours today.
Why You’ll Love It
- Windshield projection — Displays your speed in your line of sight.
- Two models available — Choose GPS-only (M1) or OBD2 with vehicle diagnostics (M3).
- Real-time alerts — The M3 model flags engine and battery issues early.
- Clear digital display — Readable even in direct daylight.
The GPS-based HUD speedometer is easy to install and has excellent visibility. It allows you to check your speed at a glance while driving, making it convenient and a highly satisfactory product for its price.
Loved it
It works really well. It starts and stops automatically when the key is turned in the ignition. It shines so brightly that I don't even need reflective film. I am very pleasantly surprised. Honda FR-V 2005
Excellent product, it looks great on the windshield without the need for the reflective sheet. I compared it with the projector on a factory Mazda CX-5 and it is more readable as it shines brighter and the numbers are larger.
Works perfectly, installation is simple, first startup takes about 15 seconds, subsequent starts are almost instantaneous, remembers the last selected option, automatic brightness adjustment.