usb flash drive 3.0 1.Shipping:DHL,TNT ... flash drive, Specification:Capacities available16MB,32MB, 64MB, 128MB, 256MB,512MB,1GB, 2GB, 4GB, 8GB, 16GB,32GBUSB chipsHigh quality Samsung/Hynix/Micron Grade A ... speed11-15Mbps(USB 2.0)Writing speed5Mbps (computer configuration dependent)(USB2.0)PowerNo external power supply required ... condition ,repair rate in past 4 years 0.002%.If the item is defective use ...