model:dgn-r features: 1.one piece body with stronger key ring design 2.full compatibility with usb 1.1 and 2.0 3.dual channel flash memory architecture 4.hot plug and play; functions like another hard drive 5.supports password protection 6.no driver needed for most operating systems (windows 98se driver available online) 7.led indicates power, busy 8.more than 10 years data retention 9.limited lifetime warranty 10.capacity: 512mb, 1gb, 2gb, 4gb,8gb 11.interface: usb 2.0 12.dimension: 67.8 x 17.2 x 7.7 mm 13.life-time warranty