I haven't seen anything in the ads nor specs about a built-in (nor plug-in) microphone for this device but SOMETHING is microphonic. I installed a Tricorder app (ok -- sorry, aging semi-Trekkie, here), and the spectrum analyzer indicated some low level audio input. In other words, I saw (what the app displays as) a low volume wave form that corresponded exactly to the syllables I was uttering, and went flat when things were quiet. Does anyone know about the microphone function on the Cruz Tablet (good apps to record notes with, etc.)? Thanks in advance!