1)Memory capacity:128M to 8GB 2)Screen:without screen3)Connection of PC:USB 2.0 high speed4)Weight: about 15G5)Size:44+28+12mm6)Playing time:about 5 hours7)Battery:li-polymer rechargeabl battery8)Musci format:MP3 and WMA9)System requirements:Windows 98,SE,ME,2000and XP10)PC with USB port11)Accessory: Manual and USB cable, Chareger(optional)