Standard:128MB/256MB/512MB Color:Optional MAIN FUNCTION: 1.Time:Japan West Iron City core,professional waterproof pointer watch,exact time. 2.Play:MP3 suoer music enjoy,support MP3 and ADPCM. 3.U Dish:Electron movable hard dish function,"wear"the informatime and anywhere. 4.Record:Available in meeting,study,business,getting proof,etc.high quilty and long-time record. 5.Delete:Current file delete function,delete the inneed files and songa you like. 6.Repeat:Meet need of learning foreign language for 2008 Beijing Olympic Games,"wear"foreign language in hand A-B repeat function. 7.Delete:Current file delete function,delete the inneed files and songa you like. 8.Earhpone:Use five-grede contract line,convenient and easy use(choose to match). 9.Battery:Built in environmental protection save energy accmulate Hi Li-Ion charge battery. 10.Electricity offer:Unique saveelectricity function,charge 1.5-2houra play over9houra. 11.Charge:Chaege by USBorby connecting to computer. 12.Working:Red/Green/LED lights indicate working. TECHNIC REFERENCN: 1.Charging Time:5-6hours first time,after 1.5-2 hours. 2.Battery Effective Time:After full charge continue to play over 9 hours 3.Speed of File Transfer:USB1.1 4.Bit Rate:32kbps-256kbps 5.Working T:20C~+70C 6.Earphone Output Rate:5MW-5MW 7.Output Range:20HZ-20KHZ 8.Support Contract Rate:32kbps~256kbps