... USB flash drive ,write-protection USB flash drive and CD disk style USB flash drive.Product Description Wonderful Digital offer all ... memory stick,customized PVC usb stick and pen shape usb disk,and we provide 16MB to 64GB capacity for gift promotion ... )Operating Voltage1.8V-3.6VOperation Systemsupport Windows 98SE,Me,2000,XP,Vista,WIN7,WIN8,MAC and aboveData retentionOver 10 yearsPowerNo external ...