Gigastone GS-Z128GCNBL-R 128GB Classic Cap Less USB 2.0 Flash Drive, Black/Silver The durable, light-weight design of the Gig stone USB 2.0 Flash Drive is the ultimate mobile storage solution The sliding collar, cap less design protects your important content when not in use The included key loop easily attaches to key chains, so important files are never out of reach Compatible with most PC and Mac laptop and desktop computers 5 year limited Warranty