Litop 4GB Pack of 5 Gold Color Bullet Shape USB 2.0 Flash Drive Memory Disk Package includes 5 pcs 4GB USB flash drive in gold color Fashionable design, the USB flash drive looks like a bullet; package includes a key ring for keeping or hanging the USB more easily Small and pocket-sized for easy transportability with high speed in writing /reading transfer Easy to use, just plug in and play directly, no need any extra power supply Operating system supports windows 7 /8, Vista/XP/2000/ME/98/910, Mac OS 8.6 above and Linux, etc.