... 1 or 2.2 intelligent operating systemSupport external hitch 3G USB-DONGLE wireless network cardSupport ... , APE, FLAG, AAC, WAV, etc. formats audio playingSupport the formats such as JPG,JPEG, BMP, GIF ... 4GB ( Support 2GB-8GB,Optional )External TF Card Support 128MB-16GBWIFI Support, 802.11b/g3G Support ... Support to Open and Edit the Microsoft Office Documents.Audio Formats Support MP3, WMA, OGG, APE, FLAG ...