Package And Default Format : 1 PCS MOSDART 128GB Metal USB 2.0 Flash Drive comes with keyring, packed in a protective buble wrap envelope; Default Format: exFAT, you can reformat it to FAT32 or NTFS if needed. Broad Compatibility : This 128gb jump drive supports almost all operating systems including Windows Windows 2000/7/8/8.1/10/Vista/XP/2000/ME, Linux and MacOs 10.3 and intel. Compatible with any device with a USB port. Plenty of Storage For You : You can use the 128gb zip dirve to back up your photos, record good memory videos,listen to music or books in your car, give power point presentations or projects, to make Windows recovery and general files back up... Small and Key Chain Design: The thumb drive is so small and handy that you can put it in your pocket or purse, it's also great to have on hand when there is a need for a flash drive. With the built in key ring to help you to attach it to your backpack or wallet and no need to worry it will loose, carrying the data wherever you go. Waterproof And Durable: This 128gb flash drive is completely resistant to water, you can dry and use it without a problem if accidentally fall it in into the water. With high-quality metal cg for durability, provides you the reliability as the metal cg provides you protection against dust, water and temprature and shock resistant.