Knife shape usb stick, available for customized logos imprinted, usb flash drive, mini usb stick Features:1)Knife shape USB Stick2)256MB, 512MB, 1GB, 2GB, 4GB, 8GB, 16GB 3)USB 2.0, compatible with USB 1.1 4)Nand Flash5)Support Win98/98SE/ME/2000/XP/Vista/Win 7, Mac OS 9.x/10.0.x/10.1.x. OS, LINUX automatic6)Data retention: more than 10 years 7)Unit size: 55 x 21.6 x 9 mm8)Available colors: black