Package and Default Format: 1 PCS MOSDART 64GB Metal USB 2.0 Flash Drive comes with keyring, packed in an eco-friendly paper box; Default Format: exFAT, you can reformat it to FAT32 or NTFS if needed. Broad Compatibility: This 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 intel. Compatible with any device with a USB-A 2.0, 3.0, 3.1, 3.2 port. Small but Powerful : You can use the 64gb zip drive to back up your photos, record good memory videos,listen to music or books in your car, give power point presentations or projects, boost your computers, or any general files back up...... Built-in Key Chain Design: The thumb drive is smaller than you expected! It can be easily put it in your pocket or purse. With the built-in keychain, you can carry the data wherever you go and never worry about lose the thumb drive. Waterproof and Reliable: This 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. The solid metal cg provides you protection against dust, water, and it’s shock resistant.