Bestrunner 4G Swivel Key Chain Flash Drive USB 2.0 Pen Memory U Disk Specifications: Interface: USB2.0 Capacity: 4GB Storage Temp: -20 C - +55 C Operating Temp: -30 C - 70 C Color:4 for your choice Hot Plug !#!amp!*!amp; Play Durable solid-state storage Shock resistance， damp proof Compatible with USB 1.1 \/ 2.0 More Than 10 Years Data Retention Support Window ME， 2000 and XP Vista Window7 Easy to read and read in high speed， No need drive \/ power supply only plug in USB 2.0 compatible Plug !#!amp!*!amp; play with Windows 2000 \/ XP \/ Vista\/Window 7， Mac 9.0 or above Small style and fashionable products， as an impressive gift for your beloved， friends or even customers Package Included: 1 X USB Flash Memory