4GB USB flash drive with great cost performance and high quality, multiple color choices. If you need other capacity USB flash drive, please send email inquiry. Plug and work, support windows 7 8 10 Vista XP 2000 ME NT Linux and Mac OS, compatible with USB2.0 and below. Good performance in digital data storing, transferring and sharing with families, friends, workmates, clients and machines. The metal side has a 360 rotation, covering and protecting the usb end while carrying it around and turn back in any position, for the most comfortable use. Capless design with integrated loop makes it easy to attach to key chains, backpacks and etc. Mini design so that you can put it in pocket or any small space.