Metal USB card ,laser logo,silk printing logo,push and pull usb interface,USB 2.0 size: 8.5*5..8*0.2cm. 1. Thin color Card USB drive, 2. USB Host Interface : USB1.1/2.03. Available capacity of 32M,64M,128M,256M,512M,1G,2G,4G4Size:8.5*5.4*0.28(cm) Metal USB card shaped,engraved logo or silk printing on both sides,only0.2cm thin