4GB-2TB 128GB 64GB Metal MINI USB 3.0 Flash Drive Memory Stick Pen Thumb U Disk
Capacity:4GB/8GB /16GB /32GB /64GB /128GB /256GB/512GB/1TB. Writing speed: 10-20Mb/s, Reading speed: 20-40Mb/s. The rate of performance depends on the different operation system available and various flash adopted,so the speed maybe different.