1) Avaible capacities: 64MB, 128MB, 256MB, 512MB, 1GB, 2GB, 4GB2) Certifications: RoHS, CE, FCC, CCC, CN123653) USB host interface: USB 1.1, USB2.04) O/S: Windows 98/SE, Windows ME, Windows 2000, Windows XP5) Data retention: above 10-year6) Write protection switch7) With write-protect and password-encrypt function, which can avoid the documentbeing erased and defend the virus 8) Reading speed: 12mb/s, writing speed: 8mb/s9) Packing: blister packing with WIN 98 CD OM driver common, English or OEM 10) Comes with two years warrantyWe are USB flash drive manufacturer in China, and supplies many kinds of USB flashdrive, such USB Pen, Timber USB, USB watch, USB card reader, bracelet USB etc.If you want to know more details, please contact me. producing area:China payment:T/T,L/C supplying capacity:10000pcs