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AZIJYV Obd2 Gauge Display P21, Heads Up Display for Cars, Displaying Multiple Functions, Speedometer, Slope Meter, Digital Speedometer for car Suitable for After 2009
$45.99
Guaranteed Safe Checkout
Features & Compatibility
Price: $45.99
(as of Apr 18, 2026 19:20:07 UTC – Details)
Product description
Product Introduction
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. hero-video Merchant Video
This product is a dual-system LCD car head-up display, which can intuitively display the data on your car on the product screen. You don’t have to look down to view your car data during driving. You can placed it in anywhere you can easily view your data, the product keeps you safe on the go.
Product Mode 
This product uses GPS and OBD2 dual mode, equipped with one OBD cable, one cable can use two modes, you can switch freely. Note that if your car is pre-2008 you can only use GPS mode, if your car is post-2008 you can use dual mode.
Product Features
The car head up display adopts a 3.5-inch color LCD display, with clearer fonts; The speed unit can be freely switched between MPH and KM/H; HUD tachometer has 12 languages to choose from; Blue, red, and purple ambient lights can be freely matched according to the buyer’s preferences.
1 Multiple Alarm Functions
2 Safe-No Worries
Newly Upgraded 
GPS+Beidou+Galileo Global Positioning System
Built in GPS+Beidou and Galileo chip modules, capable of receiving up to 32 satellites, high-precision altitude, time, latitude and longitude, compass and other information, meeting the needs of outdoor, Tibet, self driving and other car use!
Automatic turn on/off
Obd2 Gauge Display adopts high-performance processing chips,powerful performance and compatibility, dual systems, dual running memory, and dual core processors to ensure smooth high-speed operation. Intelligent automatic power on/off, automatically switches on/off with the start and stop of the car.
Unique Design 
Button and port functions 
11 major interfaces, switch freely
Product Comparison Table
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Customer Reviews
4.1 out of 5 stars 43
3.8 out of 5 stars 127
3.3 out of 5 stars 12
3.7 out of 5 stars 347
3.6 out of 5 stars 44
3.7 out of 5 stars 188
3.4 out of 5 stars 8
Price
$45.99$45.99
$45.99$45.99
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$33.99$33.99
$57.99$57.99
$32.99$32.99
$23.99$23.99
System
OBD2+GPS
OBD2+GPS+Slope
OBD+GPS
OBD+GPS
OBD+GPS
OBD
OBD+GPS
unit of speed
KM/H, MPH
KM/H, MPH
KM/H, MPH
KM/H, MPH
KM/H, MPH
KM/H, MPH
KM/H, MPH
vehicle speed
✓
✓
✓
✓
✓
✓
✓
RPM
✓
✓
✓
✓
✓
✓
✓
Voltage
✓
✓
✓
✓
✓
✓
✓
Driving distance
✓
✓
✓
✓
✓
✓
✓
Driving direction
✓
✓
✓
✓
✓
X
✓
Water temperature
✓
✓
✓
✓
✓
✓
✓
Overspeed alarm
✓
✓
✓
✓
✓
✓
✓
Driving Fatigue Alert
X
X
✓
✓
X
✓
✓
【Note】The OBD system is only applicable to gasoline vehicles after 2009,while the GPS system is applicable to all vehicles. Please switch to the GPS system for other vehicles. This product is only applicable to vehicles with OBD2 protocol and EU-OBD protocol (after 2009). This product does not support JOBD and OBDI. The OBD model is not compatible with hybrid electric vehicles, diesel vehicles, pickup trucks, RVs, and computer modified vehicles. The following brands are not compatible with the OBD2 system: Renault/Peugeot/Citroen/Fiat/Jeep/Dodge/Jazz/RV/Hummer,etc. (Note: If you want to use OBD mode but are unsure if your car is compatible with OBD,please confirm with us before purchasing.)
【Product Introduction】This is a multi-functional dual system car head-up display, the display can show car data and driving data on the product screen, you don’t need to look down to check the car data. The product box contains double-sided adhesive stickers and suction cup bracket, you can install it on the car centre console or on the windscreen.
【Product Features】This flat screen display has multiple function displays to meet your various needs. It adopts 3.5-inch colour LCD display with clearer fonts; the speed unit can be freely switched between MPH and KM/H; the HUD tachometer is available in 12 languages; blue, red and purple ambient lights can be freely matched according to the buyer’s preference.
【Function display】 OBD mode function: vehicle speed, water temperature, voltage, fuel consumption, speed clock, single driving time, driving distance (single/cumulative), intake pressure, oil temperature, air-fuel ratio, turbine pressure, altitude, driving direction, throttle valve, intake temperature, transmission temperature, engine load, up/down slope angle, left/right tilt angle, acceleration test, brake test. GPS mode function: vehicle speed, voltage, satellite time, altitude, number of satellites, driving direction, single mileage, driving time, up/down slope angle, left/right tilt angle, acceleration test, brake test.
【Multiple alarm functions】The car head up display has many alarm functions, and the OBD mode has overspeed alarm, speed alarm, water temperature alarm, voltage alarm, and tilt alarm. GPS mode has overspeed alarm, low voltage alarm, tilt alarm. These functions can make you drive with peace of mind, very safe and reliable.
【System and Mode】This product is a dual system display with OBD mode and GPS mode, which can be connected to satellite signals to read your car data for accurate display. It is also possible to read data from the vehicle’s on-board computer (ECU) with the 0BD standard through the car’s OBD interface and process it to provide practical data information for drivers.
【Slope Meter】The difference between this product and other products is that it adds the function of slope meter. This product can monitor the driving angle, up and down slope of the car in real time. Whether you choose GPS mode or OBD mode, this product is able to use the gradient meter function, not limited by mode, to protect your car and journey.
【Professional OBD GPS Gauge】The P21 features an enhanced display and scanning function for automotive diagnostics that allows vehicle owners to quickly read and delete DTCs (engine trouble codes) and view real-time data streams that can help you check why the check engine light is on and clear the trouble codes, eliminating the need for time-consuming trips to the auto repair shop.
Keith A Browning –
Comprehensive, Reliable, and Essential for Any Driver!
The AZIJYV Obd2 Gauge Display P21 is an exceptional addition to any vehicle, offering a sleek and multifunctional solution for real-time driving data. The 3.5-inch color LCD screen is incredibly clear, and the ability to switch between MPH and KM/H, as well as customize ambient light colors, adds a personal touch to the display.I love that this display offers both OBD and GPS modes, making it versatile and adaptable to a wide range of vehicles. The OBD mode provides a comprehensive range of data, from vehicle speed and fuel consumption to engine load and transmission temperature. The GPS mode is equally robust, with features like satellite time, altitude, and slope angle, which are particularly useful during road trips or off-road driving.One of the standout features is the slope meter, which monitors the vehicle’s tilt and slope in real-time. This is a fantastic safety tool, especially when driving in hilly or uneven terrain, ensuring a safer journey by keeping me aware of my car’s angles.The dual system’s capability to read and clear engine trouble codes has been a real time-saver. I no longer need to make frequent trips to the mechanic just to diagnose minor issues. It worked seamlessly with my 2011 Honda Civic, providing accurate data and quick diagnostics.The multiple alarm functions, including overspeed and voltage alarms, give me peace of mind, knowing that I’m always driving safely. The product is easy to install with options for the windshield or dashboard, and the stable, secure fit means it stays in place even on bumpy roads.Overall, the P21 Obd2 Gauge Display is a fantastic investment for anyone looking to enhance their driving experience with accurate and detailed information. It’s user-friendly, packed with features, and highly reliable, making it an indispensable tool for any driver!
EDM EQUIPTRONICS DISPOSITIVOS MÉDICOS S.A.S –
Good
Very good
Ben –
Would Recommend
I’ve had this digital gauge cluster for about 6 months now and it’s been great! It will show you all sorts of cool information all from your OBD2 port. It is very bright and functional. The only issue I have from time to time is the screen will lag out.
victor hernando sanchez –
Buen producto
Muy buen producto
Daniel Abdala –
Vulgar
Tiene varios ítems a tener en cuenta. Pero le falta desarrollo para mejorarlo
Scooter Grandpa –
Quick fix
I needed to know what the engine coolant temperature is because of cooling problems with this car. This was an easy and quick fix. Well worth the money.
Thomas –
Broken
Well the menu button broke after pushing it 4 times, i try to take good care of my things. I assume it came broken, very sad for $50😥
biker650 –
Nice but
Reboots every minute.Changed to GPS and works fine now.
Tom. K –
Works great