universal 6.2 inch Android 4.4 head unit

I bought one of these elsewhere from US stock, as an upgrade from a similar dual core unit. It's really quad core, the extra cores alleviate delays when switching between Google Maps and other apps. Also I have not had any problems with the audio control when switching to navigation or speech input. The internal microphone is not good, I was unable to use it for navigation input, but with an external microphone it is reliable. It has the added feature of being able to set how long it will be in "sleep" mode.

Overall, I am happy with this universal head unit and would recommend it to anyone.