Specifications: Built-in Nand Flash Memory from 16M-512M Compatible with USB1.1 Compatible with MPEG-4(ASF)，with Stereo MP3 or ADPCM, Displaying Qualified Images of VCD, Resolution of 320X240@30f/s; ADPCM/WAV/MP3, Synchronization Displaying of MP3-ID3,MP3 With Built-in MIC for Stereo MP3，WAV（ADPCM ) Recording Other Video Programs through A/V IN Displaying and Viewing Photos with Format of JPEG Playing Mini Funny Games Connecting TV Device through A/V OUT(PAL or NTSC) Built-in Slot of SD/MMC With Ebook Function and Compatible with *.TXT Digital FM with Frequency of 87.5-108.0MHz。 2.5 inch TFT Up to 12 Hours for Audio Playing and 4 Hours for Video Playing Removable and rechargeable Lithium-Ion Battery; Charging through Adapter or USB Connecting