Makersmart&reg; 512GB Waterproof Mini Metal USB 2.0 Flash Drive U Disk Memory Stick (Black) Waterproof Mini Metal USB 2.0 Flash Drive, Can Rotate 360 Degree As You Wish Light weight and foldable,easy to carry and use USB specifications 1.0, 1.1, 1.2, 2.0 compliance support, easy plug and play Transferring rate up to 12M per second at high speed (Depends on different PC configuration) At least 10 years of data retention with 1,000,000 times storage