3704 WT-UPG3.0-BK-64GB USB Flash drive 64GB USB 3.0 driver 64GB High Speed (Up to 150Mb/s) Read :150Mb/s Write:40Mb/s Read :150Mb/s Write:40Mb/s Warranty time for 1 year Support OS:Windows Me/2000/XP/Vista/7/8 Linux Kernel2.4 /MAC OS 9.x Interface :USB1.1/2.0/3.0 / Plug and Play 6cmX0.6cmX2.2cm LxWxH , Weight :23g