... microphone recording function (optional)13. Support of USB-HOST function, can support an external U disk, MP3, MP4, wired mouse, and other ... . Support for stereo headphones and external audio output sound speakers17. Support Language: Multilingual18. USB mobile disk, WIN_2000 drive over the system ... . Side Interface: TF (ie Micro SD) card, headset, Mini USB, mini-HDMI, power, MIC, SIM (ie 3G card); Side ...