Dimension: 120 x 66 x 11 mm Weight: Display: 1.8" TFT, 260K colors Color: Blue, Red, Green, Black, Silver Capacity: 128M, 256M, 512M, 1G, 2G, 4G Interface: USB2.0, 1.1 compatible Supported file: MP1, MP2, MP3, MPX, JPG, WMA, ASF, WAV and AVI FM: built-in FM radio, save broadcasting station, automatic searc EQ modes：7 modes as Natural, Rock, Pop, Classic, Soft, Jazz, DBB Play mode: Repeat Once, Repeat All, A - B, Scroll Function E-book: TXT reading, can read novel freely Telephone book: support 99 numbers. Games: Built-in Games Speaker: built-in speaker MIC: built-in mic phone Voice recording: Super-long and VOX voice digital recording from mic or radio Screen saver: support logo and picture, can display your favourite pictures Can support display by user-defined during playing and waiting Disk management: delete files, speedy format, normal format and EMS memory Supports Lyrics (LRC), song synchronization Battery: built-in lithium rechargeable battery playing up to 8 to 10 hours Language: English, Japanese, Korean, German, French, Italian, Spanish, Swedish, Czech, Dutch, Portuguese, Simplified & Traditional Chinese Supported OS: Windows 98/ME/2000/XP/ MAC OS 8.6+, Linux 2.4.0+ Accessories: Headset, USB Cable, Neck String, Battery Charger, User Manual & Driver Scheme: AK3222M