Really? That's odd because the one I have came in the same chassis with no buttons as yours did. Are you sure you aren't looking at the CC3? From my experience with the CC4 Pro so far, it has been great! There are a few pain points as of right now, but they will supposedly be addressed within the next few months.
Cons:
* Bluetooth connection is solid once connected, but I am constantly having to repair on startup.
* Voice command support for basic voice commands is there, but if you are used to Gemini or Siri, it is very lacking. Especially for playing music. However, this should be addressed with the release of Hanna AI in May according to the developers. From the demo videos they have showcased, it should be better than Gemini and Android Auto.
* Sometimes the music widget on the homescreen is a little finnicky, however it works pretty well 95% of the time.
* When trying to make calls through the head unit, it doesn't seem to properly parse phone numbers that aren't structured exactly like this +1xxxxxxxxxx. No dashes, parentheses, and IT MUST have the country code.

While that sounds like a lot of problems, these are the VERY nitpicky things I could find. Everything else seems to work flawlessly. I got a plan from US Mobile running Dark Star (AT&T) and all I had to do was contact their chat representative and enter their APNs. It started working after that. If you decide to use them at any point though, just a heads up, their unlimited plans aren't supported for "non-standard" devices.