Capacity: 128MB-8GB  Mp4 player product feature and specification: Feature:  -Multi formats support OGG, MP1, MP2, MP3, WMA, WAV, AMV etc. Audio and video formats -Stereo FM Radio -Super-long and VOX voice digital recording from mic. Or radio -Supporting pictures screen saver  -18 languages Selection: English, Trad Chinese, Japanese, Korean, French, Italian, German, Spanish, Swedish, Portugal, Danmark, Dutch, Czechish, Polish, Hungarian, Russian, Thai, Simple Chinese Electronic album and picture browse, electronic file storable and readable -Lithium rechargeable battery pladying  Telephone book function and Electronic book function -Firmware upgrade available  Specification:  -Size: 70.3mm(L)*55.6mm(W)*8.1mm(H) -Weight: 42g -Color: Black, Silver, Green, Blue, Red -LCD: 128*160, 1.8" 260K Color TFT Display  -Memory Capacity: 128M/ 256MB/ 512MB/ 1GB/ 2GB/ 4GB/ 8GB -Interface: USB2.0 (Read: 1000k Byte, Write: 800K Byte) -Record sample rate: 8KHz -Recording format: WAV(32Kbps), ACT(8Kbps) -Recording time: 72 hours (ACT, 256M Memory) -FM receiving frequency range: 76MHz-96MHz/ 87MHz-108MHz -SNR: 90dB -Output Frequency Range: 20Hz-20KHz -Operation System: Windows98/SE/2K/XP, Mac OS 10, Linux 2.4.2