MICRODRIVE E9 128GB Metal U-disk High Speed USB 3.0 Computer Flash Drive - Gold ?USB 3.0 standard interface U-disk, ensures stable and fast data transmission ?Metal shell material, fine workmanship, exquisite and stylish ?No external power is required, plug and play, no need to drive ?Can be used to back up files, movies, music, pictures, software, etc. ?Comes with a metal chain and ring, convenient to carry ?Waterproof, shockproof, X-ray resistant, durable to use ?Compatible with most computers and laptops Specification: ?Memory: 128GB ?Shell material: metal ?Size: 40*12*4mm ?Upload speed: 20-90Mb/s ?Download speed: 15-80Mb/s Package included: ?1 x U-disk ?1 x Metal Chain with Ring