CHUYI Novelty Metal Dog Tag Shape 64GB USB 2.0 Flash Drive Necklace Pen Drive Data Storage Memory Stick Waterproof Thumb Drive USB Flash Disk Gift Novelty Design: metal material, pen drive with chain, can be as necklace, small size, convenient and portable, easy to carry and use it at any time. Perfect gift to your friends or families Using USB 2.0 interface, high read and write speed, real capacity brand new A-class flash chip, it is very safe to keep your data in the usb drive without any problem, at least 10 years of data retention with 1,000,000 times storage. NO data missing Plug and play, no external power supply required, in line with High Speed USB 2.0 specification, data transmission speed. Store and share your photos, videos and music in a simple and reliable way. it is very safe to keep your data in the usb drive without any problem, NO data missing Safe and Reliable: the data can be stored for 10 years; anti-magnetic, earthquake, moisture, high and low temperature resistance. Suitable for digital data storing, transferring and sharing in school, in family, to friends, to clients, to machines. Apply to data storage of music, recipe,photos, movies, designs, manuals, programmes, handouts etc. Operating System: Win98 / ME / 2000 / XP / Vista / win7 / win8, Mac OS 9.X / Linux2.4 or more