Usable Space and Default Format: The usable space of each 16GB pen drive is 14.5GB. Due to the space calculation difference between computer and flash memory, the usable space is less than the listed space, find the detail explain on our specification page. The default format of 16gb pen drive is FAT32. Interface and Usage: USB2.0 interface, plug, and play, no additional software needed. You can use the 16gb flash drive to back up your files on desktop or laptop under Windows or Mac or Linux system, store music and play in the car audio, save presentations and play in projectors, save movies and play on TV, make a bootable drive for Windows recovery purpose. It can also serve as a perfect gift for distributing photos, videos at weddings and gatherings. Small but Powerful: Cute and dainty, when you get this flash drive in hand, you will realize how small and featherweight it is. Slim and sleek, narrow shape ensures you can fit them into the crowded USB ports. 16gb capacity meets your daily needs of digital storage and transfer for files, documents, photos, music, videos…. Waterproof and Durable: Made in solid metal, it won’t be bent or broken. With waterproof technology, the thumb drive suits all weather conditions. If you accidentally drop the thumb drive into water or even you forget it in your pants and put it in the washing machine, no panic, the thumb drive survives those accidents. This sturdy metal thumb drive with silver color finishing is your premium solution for data storage. Keychain Design: USB2.0 16gig well-constructed metal zip drive come with the solid key chain, you can attach them to your home keys, car key, laptop bag, wallet, work card, watch belt… No more worries the little storage drives will get lost. Whenever you want to use the data in those zip drives, you can easily find them and ready to go.