What we appreciate about these three-channel dash cams is their discreet design - both don't come with a screen and can easily be installed. The VIOFO A139 Pro is a screenless triple-channel dash cam, almost the same as the older T130. We love that its front unit is able to be rotated vertically up to 300° for greater coverage, adapting better in different car models for optimal positioning. If you like to record your trips or include travel videos in your vlogs, you can easily switch the front lens to the cabin with this.
On the front of the A139 Pro, we can see that it comes with the LED status REC, Mic, GPS and Wifi. On the bottom part of the front camera, you can see the Power, Recording, Video Protection, Microphone, and Wi-Fi buttons. Designed for security, it’s valuable to know that you can use the Video Protection / Emergency Button to lock the A139 Pro’s currently recording video. This is crucial if you're driving and you want to make sure you save the current footage as locked to ensure that loop recording doesn’t delete it. The DR770X Box instead only has the option to mark and manually record a video through it’s bluetooth button, triggering manual recording. Other options will need to be controlled in-app.
While the VIOFO A139 Pro bears a resemblance to older VIOFO models like the T130, the story is different with the BlackVue DR770X Box. We think that this is a revolutionary dash cam as we haven’t encountered any model designed like this. For the first time, BlackVue designed the DR770X Box to be a separate unit from the cameras, carrying the BlackVue dash cam's processor, WiFi source, and memory card.
Going over its cameras, the DR770X Box has a different form factor compared to other BlackVue dash cams. The DR770X’s little cameras are linked via coaxial video cable to the Box, which serves as the recording unit that can be safely stored in the glovebox or under the seat. This means the Box can be easily kept out of sight, preventing a thief from accessing it, while keeping your dash cam footage safe and private.
We easily noticed that the DR770X Box allows a much smaller design for the front camera compared to a conventional dash cam, since all the components required to process and write the video feeds are embedded in the Box. In fact, the DR770X’s newly designed front camera, which includes a speaker and microphone, is the same size as the interior infrared and rear cameras. Because of its size, we also think it helps minimize overheating risks of a dash cam sitting on your windshield in the hot sun.
And for maximum security, all cables and the SD card slot are both protected by their own tamper-proof locking cover. Even besides the Box, each camera unit presents its own difficulty to break into, as all three of them come with their own tamper proof casing. This casing prevents the cabling from being unplugged, and the camera taken off the windshield. Because of this, in terms of security, we think that the BlackVue DR770X Box has better features than the A139 Pro.
Still, the VIOFO A139 Pro does allow for more direct control through its face buttons and accessible u