Features: brand new and high quality Fast read and write speed，reliable data storage. Solid state drive, shockproof and electromagnetic. Support various types of operating systems. With high-quality metal casing for durability, provides you for protection against dust, water and temprature and shock resistant. You can use the USB stick to back up your photos, your good memory videos, the music or books you want to listen in your car, the power point presentation or project files you need to use, very convenient for you. Specifications: Product Type: Flash Disk Interface Type: USB 2.0 Material: Aluminum Alloy Color：As Shown Capacity:128G 64G 32G 16G 8G 4G Size：Approx 45X10mm/1.77X0.39in Package Includes: 1 X Mini Disk note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. No external power supply requird. Do not pull out the USB flash drive during use, it may cause data loss. Please pull out the USB flash drive as soon as possible after use, which helps to extend the life of the USB flash drive. Please do not format the U disk frequently, otherwise the U disk may be easily damaged.