... support 3 D gameExpansibilityGoogle market as many as 20000 excellent software to download for freeAudioSupport formMP3,WMA,MP2,OGG,AAC,M4A,MA4 ... font, font color, background color, bookmarks function, support to listen to the music, look at the pictures while watch the ebook ... durationWith headset six hours movie play, 10 or more hours of music playback, HDMI output to 4 hours or more playing ...