yes
No, it has a port for an external microphone.
E621, E627, and E635 are codes for additives that are added to foods. E621 is monosodium glutamate. E627 is disodium guanylate. E625 is magnesium diglutamate. For more information visit: http://www.morechemistry.com/food-additives/e-numbers_index.html