VIOFO 4K HDR Dash Cam Front and Rear A139 Pro 2CH: A Team Test and Review

Our team of tech enthusiasts from Retro Tech Drives has just examined the new kid in the block -The VIOFO 4K HDR Dash Cam Front and Rear A139 Pro 2CH. And we dug deep into this gadget to uncover the true essence of its performance, design, and features.

Features and Specs

The VIOFO 4K HDR Dash Cam A139 comes packed with celebrated Sony STARVIS 2 IMX678 sensor, the first-of-its-kind in dash cameras that delivers vivid 4K UHD Dual Channel Front and Rear recording. The STARVIS 2 IMX678 sensor has an improved sensitivity that allows it record sharp videos even in extremely low light conditions. Coupled with a 7-Glass F1.6 aperture lens and HDR technology, the camera records high-resolution videos day and night.

Our team was impressed by the buffer parking mode feature that allows the car camera to automatically start recording once an event is detected. Conveniently, this feature extends to both the front and rear facing cameras. Besides, the device comes with a 5GHz Wi-Fi connection module ensuring seamless data transfer for video previewing, downloading, and sharing. The VIOFO 4K HDR Dash Cam A139 also logs current speed and GPS location, providing clear timestamps on recordings.

User Experience

Regarding user experience, the VIOFO dash camera scored high in some important aspects. The picture quality, especially in 4K, was noted to be exceptional, with a superior Sony sensor boosting the image quality and clarity under various lighting conditions. This cam also appealed to the convenience-centric users with its Wi-Fi mode which allows users to access the device from their phones and computers when it’s connected to a Wi-Fi network.

The device, dubbed a game-changer, turned out to be quite user-friendly, easy to set up and navigate. The issue of interior glare was a minor hiccup for those with sharply angled windshields though the high-quality video seems to compensate for it.

Professional Installation and Card Needs

One aspect that some users might find challenging is the professional installation of the device and the explicit SD card needs. Though the manufacturer has provided troubleshooting information, a clear guideline about these needs could take user comfort to an elevated level. Beside that hurdle, the setup process was shown to be fairly seamless, especially with the super slim coaxial cable facilitating easier and more stylish installation.


Our team couldn’t help but agree with some users who opined that this might not be the most suitable option for the non-techy folks. Though the camera scores high on functionality and efficiency, complete novices might find it a bit complex and challenging to use which might affect their overall user experience.

Final Verdict

Overall, the VIOFO 4K HDR Dash Cam A139 Pro 2CH boasts some fantastic features and offers a solid performance in terms of video quality. It’s undoubtedly a front-runner in the Dash cam market and, despite a few challenges, justifies its 4.1/5 Amazon rating.

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