Usb flash drive Features: Our own original appearance design Appearance design patent no.: zl200430007577.2 Supports user password to protect your data in usb flash drive (password function is optional) Elegant stainless steel cover, full protection With key ring design, convinient to take Specifications: Interface: usb 2.0 version, compatible with usb1.1 Transmission speed:maximum 12mb/s. Capacity: 256mb, 512mb, 1gb, 2gb, 4gb, 8gb flash memory. Suitable for mac and windows Plug-and-play function, no need driver (except windows 98) Size:5.2*2*1 cm Weight:19.8 g Shrink wrap retail package