Features & Compatibility
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Product description
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. F6 Use Cases Merchant Video

Keep your eyes on the road, not the dashboard 
F6 focuses on one thing—displaying your speed clearly and reliably, helping you stay safe on the road


The F6 HUD is powered through your car’s 12V cigarette lighter using the included Type-C power cable.
Product List 
The F6 HUD is powered through your car’s 12V cigarette lighter using the included Type-C power cable.
The F6 HUD is powered through your car’s 12V cigarette lighter using the included Type-C power cable.
It does not use the vehicle’s USB port. Once plugged in and powered on, the device will automatically start working.
Can I switch between MPH and KM/H?
Yes. The F6 supports both MPH and KM/H.
You can switch the speed unit in the system settings.
Is the brightness adjustable for night driving?
Yes. The F6 supports automatic brightness using a built-in light sensor, and also allows manual brightness adjustment.
You can choose from:
Auto brightness
Dark / Medium / Bright
Can I calibrate the speed if it’s slightly off?
Yes. The F6 includes a speed coefficient correction feature.
What information does the F6 display besides speed?
The F6 HUD displays rich driving data, including: Speed, Compass direction, Altitude, Time / Date, Odometer & trip distance, Vehicle voltage, Pitch & roll angle, Satellite signal status, All information is shown clearly on the LCD screen.
GPS-Based Speed Display – No OBD Required: Uses GPS satellite positioning to display real-time speed, avoiding compatibility issues and vehicle ECU interference
Stable Power & Reliable Performance: Powered through the car cigarette lighter with Type-C interface, designed to reduce startup issues caused by unstable vehicle voltage
Auto & Manual Brightness Adjustment: Built-in photosensitive sensor automatically adjusts brightness for day and night driving, with manual levels available for personal preference
Multiple Driving Data in One Screen: Displays speed, compass, altitude, voltage, driving time, single trip distance, and odometer for better driving awareness
Speed Alarm & Fatigue Driving Reminder: Customizable speed warning and fatigue reminder help improve driving safety during long-distance trips
Easy Installation & One-Button Calibration: Simply place on the dashboard, connect power, and calibrate with one button after GPS signal lock—no tools required
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Gerardo –
muy buen producto
exelente muy completo
Sebastian –
Un sorpresa muy agradable
La verdad no le tenía nada de fe, pero me sorprendió gratamente. Aún no entiendo un valor que sale de vez en cuando reemplazando el altímetro pero tampoco es que me importe.
REVIEW NINJA –
Good ONLY for an Older or vintage vehicle
BLUF: A large, high-resolution screen that adds a digital dash to any car without the need for complex wiring or ECU interference.After testing this display, it’s a practical way to modernize an older dashboard, though it feels more like a utility tool than a high-end tech upgrade. It provides a clear secondary readout for speed and trip data, but the “plug and play” setup means adding some extra clutter to your dash. It’s a solid choice for those with a broken speedometer or a desire for a heads-up view.👍 GPS Speedometer HUD features a crisp 6.8-inch IPS screen that is significantly easier to read at a glance than traditional analog gauges.👍 Uses GPS satellite positioning, making it compatible with any vehicle👍 Includes an auto-brightness sensor👍 Consolidation of data like altitude, trip time, and voltage provides helpful awareness for vehicles lacking a modern trip computer.👎 Reliance on GPS signals means accuracy can drop or cut out entirely when driving through tunnels or dense urban canyons.👎 It is a bit of an investment for a device that offers many of the same features as a standard smartphone navigation app.👎 The lightweight ABS plastic construction feels a bit budget-friendly and may be prone to heat-related wear on a sunny dashboard.👎 While the safety alarms are a nice inclusion, the alert sounds can be more of a nuisance than a help during long-distance trips.🏆🏆🏆🏆🏆 RECOMMENDED: If you need a straightforward digital upgrade for an older ride, this unit delivers the data without the drama of a complex install. It’s a solid, functional tool that stays in its lane.
C. Harrison –
Not really digging it. Cannot recommend as a dash mounted vehicle Speedo/ODO tool.
Meh, it’s alright should you need it for you regular car/truck but there are much better implementations via apps in the standard smartphones of today that provide the same info and in an more customizable way.This item would be much more suitable to an older off highway vehicle, that doesn’t have speed/roll/tilt/compass functions.I received this as part of an Amazon Vine review offer and I will likely return it after trying it out for a few weeks.The cons:Difficult to adjust / calibarate.No memory after power shutoffToo bright of a display for nighttime drivingThe display isn’t customizable at all— it always shows you speed, compass, roll/tilt, trip ODO (until next power cycle) via a “dotmatrix” of led lights.The trial of this unit was also during the winter and after a couple of warm days the double stick tape failed.All in all, if you need a dash mounted speedo unit, there are better, an more cost effective, items to select over this unit. I would certainly have no issue keeping the unit as a novelty if the price point was ~10USD.Overall impression: “meh, keep looking, or get a much cheaper dashboard mount for you phone and use one of the many free Speedo/Odo apps out there”
Steve Butcher in Wagoner, OK –
Perfect Speed Monitor for a Classic Car
I got this for my son’s 1979 Corvette so he wouldn’t have to pull out his phone to check his speed accuracy. It mounts easily on the dash and works great. The GPS speed reading matches the GPS on my phone almost perfectly, so it seems very well calibrated.Installation was simple—just plug it into the cigarette lighter and place it on the dash. The display is easy to read, and it’s nice that it also shows additional info like direction and trip data. For older vehicles without modern electronics, this is a really useful upgrade.
Brian F. –
perfect for a resto-mod vehicle
this little dash gadget is extremely cool and useful! i am restoring an old triumph spitfire, and i am using parts that dont really work tgoether, especially the speedometer/odomter. the GPS speed in this is a great alternative. and it is very accurate and refreshes quickly! the clock, compass, and other info readouts are super useful as well. the inclinometer and tilt gauges are probably more meant for off-road/jeep situations, but still cool to have. the gauge wires easily and looks right at home on top of the dashboard. the screen could be a bit brighter, and some sort of anti-reflective coating would go a long way, but its not too bad in the sun. this is completely universal, and only needs a 12v source to run. overall, a great value!
Steve –
Garbage, save your money….
Typical made in china garbage….Yes AMZ will probably censor this, but I don’t care.The one part that I actually purchased the product for does. It work and has NO instructions on how to set it correctly….(Compass). I drove around the neighborhood using multiple 360 degree turns and 0……no matter what direction you head, is my shows 198-200 degrees….(I have a true north facing house, In my driveway, every other compass I use shows between 355-005 degrees, and usually closer than that! I don’t need the other parts of it, I have vehicle trip odometers and speedometer. Yes vehicle has a N/S/E/W compass, but trying to look for an actual compass heading as I. Degrees!