Dimensions : 60.7X19.9X11.3mm; Description : one to support dual-mode BIOS USBZIP and two USB hard disk, USB interface, without drives, a plug-and-play, hot-pluggable 3. The small size and extremely light weight, moisture-proof four seismic without Driver (except for Windows 98) 5, data encryption, disc can be divided into public data extract, encryption, segmentation arbitrary size 6, LCD by solar electricity, no replacement battery; Screen Brightness alternation, indoor or outdoor light can be under flashing; Whole sparkling, a built-in color patterns, creating rich personalized logo; used as a digital document storage, friendship gifts, advertising promotional gifts, and collectibles.