Features: 100% New&High Quality Storage Capacity: 4GB Support USB version 2.0 and 1.0 Easy plug and play installation Interface: USB 2.0; Capacity: 4GB Stylish lightweight; portable,new concept modeling,classic fashion,compact Brisk High Speed; plug and play, in line with USB 2.0 specification, data transfer speed. Compatible with Windows 7/Windows 8, Windows XP, Windows Vista, Hi-Speed USB 2.0 port required for high speed transfer Support solution for Linux kernel version 2.4 or later version Driveless for OS 9X or up Durable solid-state storage No external power is required 4.5V ~ 5.5V from USB port The data read speed: 8M-18M/S（USB2.0） The data write speed: 3M-7M/S（USB2.0) Operating Temp: -10 to +55Deg.C Storage Temp: -20 to +55Deg.C Package Included: 10pcs x 4GB USB 2.0 Flash Drive.