Promotional USB flash drive, logo USB memory stick Leather USB flash drive with your logo printing Capacity range: 64, 128, 256, 512MB, 1, 2, 4, 8, 16, and 32GB USB interface: Plug-and-play and hot-swap LED indicates the state of the drive USB2.0: Reading speed: 10 to 22Mbps Writing speed: 5 to 16Mbps USB bus-powered, no external power required System requirements: Microsoft Windows 98/Me/2000/XP/Vista Shockproof, moisture-proof, and magnetic-proof Data retention: over 10 years PVC bag /paper box/poly bag