Package And Default Format - 1 PCS of MOSDART 64GB Metal USB 3.0 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 usb 3.0 64gb 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 above Compatible with any device with a USB port. Smaller Than Others - Conveniently designed usb 3.0thumb drive, the thumb drive is sleek and smaller than the other usb drives. And it has a loop for a keychain and very awesome for keyring or have handy when needed, lots of data space in the small package. Waterproof And Durable - This usb 3.0 64gb 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. USB 3.0 Flash Drive Fast Speed - Read Speed: 90M/S, Write Speed: 20M/S. Spend less time waiting and transfer files to the drive, up to three times faster than with a standard USB 2.0 drive, backward compatible with USB 2.0.