... in 2800mah Lithium battery. 2.operation: mechanical keypad 3.with FM and G-sensor 7 inch electronic book Power (battery type): built ... TTS (optional) History Skip page Read from bookmark, create bookmark and delete bookmarkFile types: Video format:WMV, RM, AVI, 3GP, ... DAT,H.264, VOB, MPG, and MPEG 720PMusic: MP3, WMA, FLAC, AAC, OGG, and WAV Photo: JPEG and BMPFM radio (optional) frequency range: China ...