... 256MB-32GB fast speed of read new model of USB pen, ball pen USB driver, USB pen stick Specifications1) Crystal FLASH ... 10 years of data retention4) USB Specification 2.0 compatible with USB 1.15) Plug-and play; ... no external power supply required, USB bus-powered6) Capacity,256MB,512MB,1GB,2GB,4GB ... ,0401,6321,08812,190 Package new model of USB pen, ball pen USB driver, USB pen stick