1、USB3.1 Gen1 high-speed transmission protocol, the sequential read speed up to 75MB/s, improving your working efficiency. 2、32GB-256GB capacity optional, fully meet the requirements for storing and transferring videos, songs, and photos. 3、Zinc alloy shell, shockproof, wear-resistant and anti-fall, better protect your valuable data. 4、The compact design allows you to take important files with you wherever you go. 5、Supports multiple formats of music, photos, videos and office files. Features: USB3.1 Gen1 high-speed transmission protocol, the sequential read speed up to 75MB/s, improving your working efficiency. 32GB-256GB capacity optional, fully meet the requirements for storing and transferring videos, songs, and photos. Zinc alloy shell, shockproof, wear-resistant and anti-fall, better protect your valuable data. The compact design allows you to take important files with you wherever you go. Supports multiple formats of music, photos, videos and office files. Specification: Type: Lenovo thinkplus USB3.1 USB flash drive Model: TU100 Capacity: 32GB/64GB/128GB/256GB(optional) Material: Zinc alloy Sequential read speed: Up to 75MB/s Sequential write speed: Up to 25MB/s Interface type: USB3.1 Gen1 Compatible system: Windows Vista/Win7/Win8/Win10, etc. Item size: 5.87 * 1.8 * 0.78cm /2.31 * 0.71 * 0.31in Packing list: 1 * U Disk 1 * U Disk