A129 Pro Duo 4K Dashcam – 2 Channel – Front & Rear


(20 customer reviews)
  • Ultra HD Real 4K Dual Channel Dash Cam
  • Upgraded Super Night Vision & WDR
  • Buffered Parking Mode
  • Built-in Wi-Fi & GPS
  • Premium Functions & 100% Satisfaction Service

* See Below For Full Product Description

  • Would you like to add a Micro SD Card?

    Viofo cameras require an SD card to store video footage. It's crucial to use a High Endurance micro SD card suitable for dashcams. We recommend Viofo cards. The card size depends on the desired video storage length. Viofo cameras loop record, overwriting the oldest footage when the card is full. Our most popular size is 128GB.

    Would you like to add BlueTooth Remote Control?

    This wireless button can be located in the cockpit of your vehicle. One press will automatically lock the current image/video clip. This file will be located in a protected file and not be overwritten when the camera loop records.

    Blue tooth connection and battery powered. Just one simple press of the button to save and lock important video clips. Small, light and can easily be located in a suitable postion on your dashboard


      Available on back-order

    Will you be hardwiring your dash camera?

    All Viofo Dashcams are provided with a good length USB cable to power your dash camera. However, you may wish to completely hardwire your camera to your vehicle so that the parking mode feature is fully functional. Viofo have 3 variations of Hardwire kit for the different cameras, but select this via the bundle option below and the correct version will be provided for the selected camera.

    Fit and forget your camera by hard wiring to your vehicle. When the engine is off the kit provides continuous power (but protects your vehicles battery). Enables operation of the parking mode and full surveillance of your parked vehicle

    • HK3 Parking Hardwire Kit for A119v3 and All A129 models

    Do you require fuse taps to connect your hardwire kit to your vehicle's fuse board?

    These are used to connect the hardwire kit to your vehicle via a fuse board. If you are having your camera professionally installed your installer will generally provide these. Viofo provide 4 different types, your car manufacturer or garage will be able to confirm the connection type. If in doubt we do provide a combination pack including all 4 variations.

    viofo 4pcs 2 packs circuit fuse tap with atc ats micro2 mini adapter holderSpecific connecters from the Viofo hardwire kit to your vehicles fuse board.


    Circular Polarizing Lens. Reduce reflections and glare from the windscreen and road surfaces. Significantly improves video quality and contrast..

    Circular Polarizing Lens. Reduce reflections and glare from the windscreen and road surfaces. Significantly improves video quality and contrast..

Next Day Delivery

Order by 12pm for same day dispatch & next working day delivery

Buy With Confidence

  • 30 day money back guarantee
  • Free UK shipping on orders over £90
  • Secure checkout
  • 12 month warranty
  • Sony Exmor R 8MP Sensor + Sony Starvis 2MP Sensor - The A129 Pro Duo is equipped with Sony Sensor for dual-channel to record much brighter and clearer images with rich details even in a dark environment. It brings a super clear night version that other cameras might miss.
  • Ultra HD Real 4K Dual Channel Dash Cam Adopt top-quality Sony 8MP IMX317 Sensor on the front camera and Sony IMX 291 sensor on the rear camera, this dual dash cam captures a super clear view at Ultra HD 4K 3840 * 2160 @30fps + 1920 * 1080P @30fps at the same time. 4K resolution offers amazing video quality, four times higher than a regular Full HD recording. Helps you read most details from street signs, license plates etc. Gives you peace of mind when you're driving.
  • Upgraded Super Night Vision & WDR Comes with 8 Megapixel image sensor, provides a much clearer image than most dash cameras at night, combined with an upgraded 7-Glass F1.8 aperture lens and WDR (Wide Dynamic Range) technology, maintaining the sharp image and automatically balance the lighting in overly bright and overly dark areas. Helps to capture clear details that other cameras cannot read, like road signs, and license plates.
  • Buffered Parking Mode Buffered parking mode will be able to record events leading up to an impact/motion that has been detected. The car camera will save 15 seconds of video before the event and 30 seconds after the event. This is an excellent feature and completes a true parking mode as there can be a lot of vital information in the lead-up to whatever triggered the recording. To use parking mode, it is better to buy VIOFO HK3 hardwire cable separately.
  • Built-in Wi-Fi & GPS 2.4GHz & 5GHz dual-band Wi-Fi could transmit in two different standard frequency ranges to avoid wireless interference. A more stable Wi-Fi signal and faster Wi-Fi speed bring blazing speed for file transfer. With a GPS logger, the dash camera can log the current speed and GPS location, and also automatically correct the time by synchronizing with the satellite. Timestamp can be embedded in the video. Real-time speed would display on the car camera screen in KM/H or MP/H.
  • Premium Functions & 100% Satisfaction Service Loop recording, emergency recording, motion detection, time-lapse and so on. All your daily driving needs will be satisfied by this one dash cam. 【One-year Warranty】100% Satisfaction Guarantee. Any questions, please feel free to contact us at support@viofo.com or live chat on the VIOFO website, you will get a response within 24 hours.
  • Buffered Parking Mode - Not only capture the aftermath, but also record events leading up to an impact. When an event is detected, it saves 15 seconds of video before the event and 30 seconds after the event.
  • Parking Mode Solution:
    Auto Event Detection - Automatically record when detecting moving objects or impacts while the car is parking.
    Time Lapse - A video is recorded at a rate of low fps, compressed into an Ong file.
    Low Bitrate Recording - Record video at low bitrate to save storage space.
  • SUPPORT HK3 ACC HARDWIRE KIT (Optional) - parking mode provides 24 hours surveillance on your parked vehicle. When the engine is off, Hardwire Kit is used to providing continuous power and protect your car battery from discharge.
  • Bluetooth REMOTE CONTROL - With the Bluetooth remote control (optional) mounted in a convenient location on your dashboard you can safely protect important events from being overwritten, without needing to take your eyes off the road.
  • High-temperature Protection - A129 Pro Duo front camera adopts heat discharge construction and a built-in sensor to detect the temperature of the main chipset. When the temperature of the chip reaches a certain degree, the device WII automatically shut down to protect the dash camera from overheating.
  • CPL - An optional CPL (Circular Polarizing Lens) can be used to reduce reflections and glare that might otherwise foul up your image quality. (Optional)
  • Emergency Recording - Automatically record when detecting moving objects or impacts while the car is parking.
  • Loop recording – The latest video file will automatically overwrite the oldest video file when the SD card is full.
  • Motion detection – Automatically turn on the recording when it detects movement around the vehicle
  • Static Sticker:
    Particularly suitable for rental/work/fleet vehicle drivers eliminate vibration and adhesive left on the windshield
    Budget-friendly and reliable alternative for the suction
    mount and the adhesive sticker

Additional information


Front + Rear


Front: 4K (3840 x 2160 30fps) ;
Rear: Full HD (1920 x 1080P 30fps)


Front: Sony IMX317 Sensor 8MP;
Rear: Sony STARVIS IMX291


Front: 7G F1.8 aperture;
Rear: 7G F1.6 aperture

Night Vision

Super Night Vision

Viewing Angle

Front & Rear: 140°








High Speed 2.4GHz& 5GHz


Included – Integral in Base

Parking Mode

Yes – HK3 Hardwire Kit Required

Motion Detection

Yes – HK3 Hardwire Kit Required

G Sensor

Included – Integral in Base

High Temperature Resistance


Power Source

Usb or HK3 Hardwire Kit

CPL Filter


Remote Control


Max Micro SD Card


20 reviews for A129 Pro Duo 4K Dashcam – 2 Channel – Front & Rear

  1. Xanders (verified owner)

    I bought this dash cam to upgrade to a higher resolution camera with an additional rear camera. I have found the most useful feature to be the WiFi phone connection, making watching back videos and changing camera settings easy through the Viofo app.

    I connected my phone to the camera using the app to help me initially position it using the live view, for both cameras. With the included GPS module, it can also log your position & speed and plays it back in the app with the video (see picture). You can also download individual videos to your phone.

    There is also the option for parking mode, where the camera can record before and after the g-sensor is triggered, using the Viofo HK3 hardwire adaptor (not included). Parking my car on the street each night, I will shortly be fitting this as an extra insurance policy!

    I am impressed with the video quality in both daylight and at night time. The picture is smooth and you can clearly see details like number plates in 4K, 2K or Full HD resolutions. I prefer setting the Wide Dynamic Range to improve exposure further in light & dark scenes, such as driving into the rising sun.

    Overall, it’s a top notch product that is well thought out.

  2. M Ford (verified owner)

    Excellent camera and relatively easy to install (in a Mini). Fits snugly in front of rear view mirror without impeding drivers view. Pictures are very good but would suggest anti glare lens (optional) for night driving. One downfall, there’s no dedicated playback software. VIOFO recommend VLC media player. I use Dashcam Viewer which display all relevant information including GPS.

    It’s not perfect but captures excellent footage. This is the third camera I have bought and is far the best (Nextbase & Blackvue were the others). It has all the features including Wi-Fi and parking mode.

    Overall an excellent camera and worth its price for sheer quality, construction, ease of use and peace of mind.

  3. UR (verified owner)

    I’ve not giving this product a full test run as yet. However, All the bits were in the box, (smaller than I expected.) Functions are comprehensive, so take your time going through it. Fitting no real problem. Best bit, phone and pc downloads. Not cheap but you pays your money and make your choice. Cheap is not always best, especially when you need a good witness.

  4. Ricky (verified owner)

    I had the original A129 camera for 2 years and loved that. This updated camera with 4K video recording is crystal clear and is an absolute steal at its value for money compared to the bigger brands.

  5. Kalan (verified owner)

    Comes with all the bells and whistles. I had the older model A119 which was great. Decided to upgrade to this as it has the wifi function so can transfer files easily to the phone.
    Video quality is outstanding

  6. Miro (verified owner)

    I had Viofo dashcam for some years and this one is a eally nice upgrade. The picture quality is great. The cable for second camera is long and made of soft plastic so its very easy to install. No longer i had to take sd carsd out to download videos. WiFi is a great feature…. Highly recommended

  7. Matt24 (verified owner)

    The best dash camera I’ve seen picture quality is % stabilization is perfect

  8. bart (verified owner)

    I’ve been using the Viofo A129 for a year now, and its by far the best dash cam I used up to this point. Previous

    The Viofo A129 Pro Duo is simply amazing, the quality of recorded video is beautiful and the bit-rate just right for 4K. If I were to be picky, it would be the file sizes which are around 2.1GB for 5-minute clip. With a 128GB SD Card I’m expecting roughly 130 – 140 minutes of footage before it begins to overwrite.

    The camera itself is the same as the previous A129 which is incredible that Viofo managed to put so much technology into the camera and not make it overheat in the summer!

    I can clearly see all the license plates of the cars passing by in 4K at 30MPH – no wash-out which is excellent. I will test on the motorway and post an update to this one. I have also checked the Dash Cam at 1440P @ 60fps and this produced very smooth footage, which might not be a bad idea to run at in the night to provide clearer and smoother video. Night time quality is also very good – its a bit harder to read license plates but they’re still readable in many situations. I only had a chance to test in classical British weather conditions to it was made even harder to read them and the camera did a very good job.

    Overall, I’m very satisfied with this dash cam – was worth the wait.

  9. Focus (verified owner)

    Having owned the A129 duo and realising what a great dash-cam it is, once the A129pro 4k duo came out i had to have it, it didn’t disappoint. Images are crystal clear as the front records in true 4k, rear is 1080p (which is excellent). the app is the excellent, you can download clips straight to your phone via the app and the cameras built in wifi (2G or 5G)., which by the way is an fantastic app. the hardwired kit can be purchaser separate (i already had one fitted ) is a great option to if you want, as the parking mode when hardwired is worth the cam money alone.

    all in all if you are looking for a true 4K dual channel dashcam then this is the cam to buy. 10/10

  10. Sick of buyio (verified owner)

    There is so much to say about this camera ..it is going to take some time.
    I decided to enter this quickie for those ready to choose something on black friday…7 days to go.

    Buy it!
    ok thats too short even for an interrim review.
    I am surprisingly not going to waste much of your time talking about video quality even though that is the most important thing and that is because others have already.
    surfice it to say..excellent. actually the best you can buy on a 4k camera.

  11. Thomas Farrow

    Viofo A129 Pro: Great dash cam. Daytime video quality is great for me as all I wanted was clear video and to be able to pick out license plates. The camera is small, discreet and easy to slip on and off it’s mount. I wired it up to the usb-c port by the rear view mirror which is a tidy setup with hardly any visible cabling. I can’t use parking mode when plugged in via usb-c port as it’s only powered when the car is running, so something to be aware of. I also purchased the CPL filter to reduce glare, worth getting in my opinion. Reviewing the videos is simple, I’ve plugged it in to my laptop but also directly into the TV via USB. Playback loading could be quicker, however its not something I do often so not an issue for me. All in all, a neat dash cam very which is very well positioned with regards to its pricing.

  12. Andrew Livsey

    I have them in my car and van easy to use easy to set up and great quality

  13. Rob Mcmeechan

    The A129 Pro is quite frankly the best dashcam I’ve ever owned. Having previously had Nextbase, Ape-Man, Aukey and Blackview in the past, the A129 Pro blows them all out of the water, and blows them out a distance, it’s not even close! Would recommend them to anyone!

  14. Bill Pugh

    Having seen various videos from these cameras I thought that I’d take the plunge and buy a set, front and rear. A pleasure to install and most intuitive to set up, I only read the manual afterwards! Being able to view live on my phone was a great help in setting up the rear camera. Although if you haven’t had experience of installing such things before I’d advice paying someone to fit this in a Range Rover???? the rear camera mounting location is challenging!

  15. Juned

    An error on Viofo’s website was sincerely apologised for by Mr David. Was offered an upgrade for a discounted price, which I was happy about. The customer service was the best. Quick emails and the product itself of course is amazing. Very happy with the pro duo

  16. Kip

    I have the 4k duo camera se up and for the price and features that is have is a good alternative to the rest of the 4k cameras.

  17. Mrs Snowdon

    Great 4k Camera, easy to install and use.

  18. John Taylor

    The item arrived promptly and at a good price.

  19. Nick Kay

    Easy to navigate website and quick delivery

  20. John Boakes

    Good service answered all of my questions about dashcams, would recomend

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