THE MAIN REASONS THAT CUSTOMERS CHOSE US: The fast-speed USB 2.0 for stable performance and transfer;All the USB drives are double-tested by our quality inspection team before shipping;360° metal cover protects the USB connector, the key chain, and free lanyards to keep from losing; PRODUCING FLASH DRIVE SINCE 2008, A PROFESSIONAL SELLER YOU CAN COUNT ON! SPECIFICATION: Colors: Blue/black;Single Weight: 0.52oz;Fold Size: 2.2"×0.79"×0.39";Material: Superior Metal + Plastic;Durability: 50,000 times read and write;Capacity: 128MB/512GB/1GB/2GB/4GB/8GB/16GB/32GB/64GB ;Interface Type: USB 2.0 (Backwards compatible to USB 1.1);Compatibility:Desk PC, Laptop, Mac, Tablet, any device with USB port;Operating System:Windows 7/Vista/XP/2000/ME/NT, Linux and Mac OS and so on.Actual capacity: The computer's algorithm is different, so the display capacity is smaller when you plug it into the device. All the flash drives on the market are the same.