1.Capacity: Have two kinds of: a.128M of memory + Expand the card. b.HDD(20G)+128M + Expand the card. Specify from the customer. 2.Connect : USB2.0. 3.Audio port: Stereo in/out,AV out,MIC in,Video in/out.can store music for 300 hours(20G)， 4.Audio broadcast: mp3/wma/wav audio file, can store music for 300 hours(20G). 5.Video broadcast: mpeg/wmv/asf/avi video file. Can store 100 movies(20G) 6.Video recording: mpeg4+ima, adpcm@avi. 7.Audio recording: ima adpcm@wav. MIC in. 8.Photo : gpeg(exif2.2),Can store 15000 photographs or picture(20G) 9.Other: Business companion,Can exchange the data with PC quickly, can exchange the data with CF/ SD/ MMC card directly. 10.Display:3.6" LCD,960X234XRGB. 11.Expand:Support CF/SD/MMC/MS more card (Choose from the customer) 12.Pwoer:super rechargeable Lithium battery, Music broadcast:9-10hrs,Video broadcast:5-6 hrs. 13.Accessories: Specify from the customer.