My flip lid has an inbuilt system and it copes well with anything up to 80mph and anyone I speak to doesn't know that I'm on the bike unless I open the lid front.
Battery life even after 3 years is decent enough for a 4 hour ride before it needs charging.
For 180 quid I've no complaints
It does audio, voice command and the buttons on the side are easy to use even with winter gloves on.