this silver 128GB USB 3.1 Gen 1 BAR Plus Flash Drive from Samsung offers enhanced data transfer rates accompanied by a five-year warranty and Samsung's own authentication Utility Software to be sure the flash drive you are using is genuine. Plug in the BAR Plus Flash Drive into your Mac or Windows computer and begin taking advantage of data read speeds of up to 400 MB/s to move files quickly and efficiently. When finished you can take the flash drive with you on the go as it comes water, shock, magnet, and X-ray proof; and it even holds up against extreme temperatures ranging from 32 to 140°F.