So I installed mine last night and am starting to work though things. So far this seems very much like a version 1.0 product.
Installation is very easy by sticking it on the bottom of your windshield and running a USB C cable to the OBD port. Way easier than hardwiring to a fuse box or running cables along your headliner and down your headliner.
It's a bit too far away to reach for a manual record trigger so you say "Alexa, record" to trigger a "traffic stop" event. Surprisingly you can't use Alexa for anything else. It's just for triggering an event recording.
Video quality is pretty poor. It's 1080p30 for the front and rear cams. I still gotta pull more video samples (which is an incredible PITA via the app. It's also unavailable via the web browser, unlike their home security cams, which is surprising), but it only records at 7.49 Mb/s for the front cam and a comically low 1.7 Mb/s for the interior cam.
Due to the low placement, installation is easy, but you get more hood in the front cam's footage. The interior cam gets more of the dash in the frame and it also makes it harder to record any rear passengers.
Here's the Ring interior cam vs. the A139 Pro's high mounted interior cam:
The cloud capability is very limited. It's interior motion detection only. No exterior motion detection and no impact detection. Remote notifications are also kinda hit or miss. I tried "breaking in" to my car several times and it didn't always give me an alert. There's also a delay with the recording for when people get inside. It doesn't record the person looking in your side window or entering your car, presumably to cut down on false alerts? However, when you livestream remotely from your phone, it connects quickly and latency is almost nonexistent. It's faster than my Blackvue cams in this regard, though it's way less capable feature-wise.
Update: Impact detection is available if you disable the "interior motion verification" option, but exterior motion detection still isn't.
When you connect via the app, it always defaults to showing you inside your car. It makes me think that it's more of an interior security cam that also happens to double as a dashcam.
I'm still collecting sample footage and putting all my thoughts together, but so far I'm not particularly impressed by this thing. I'm sitting here trying to download footage to my phone and the app is just spinning endlessly telling me to wait while it prepares to download and I'm having a hard time pulling video off of it in the first place. Once I can pull some daytime footage to share, I can post some more still frames. Here's a quick screenshot from the app at least to give you an idea of front camera framing:
This is all just the dashcam itself and not even getting into the privacy implications of how Ring handles their cloud footage.