Usb flash drives * usb 1.1 & 2.0 certified * capacities: 64mb, 128mb, 256mb, 512mb, 1gb, 2gb, 4gb. * 1year warranty * compatible with usb1.1 * for mac and pc, no driver required * no external power required * functions as hard drive * led indicated power, read/write * shock resistance: 1000g * min. Data retention: 10 years * auto-run, space partition, password protection and boot function. * multiple operation systems supported: no driver needed in windows me, Windows 2000, windows xp, mac 9.X or later, linux kernel 2.4 or later. Only windows 98 and windows 98se need the enclosed driver * colors: blue, black, red, white, silver, orange, Tranlucent -red, yellow, orange, blue, white etc. * metal and plastic finishing (silver, golden and black metal optional) * accessories: usb cable, cd driver, lanyard (optional) * physical size: 55.2 x 18.9 x 9.0mm (lxwxh) * 0.02kg/pc