factory price usb flash drive 128gb high speed usb 2.0 flash pen drive key chain memory stick gift pendrive u77

1. usb connection,support plug & play. 2. no external power supply . 3. support different types of os. 4. solid state storage, shock proof and electromagnetic proof. 5. write protection switch 6. durable data storage 7. fast speed in write/read transfer 8. hardware requirement: pc with usb connection,notebook, 9. life:>1 million times