Item specifics:<br />1 .We are serious・ we are responsible・We specialize in Quality.<br />2 .4.5V ~ 5.5V from USB port<br />4 .Operating Temp: -10 to +55Deg.C<br />5 .Storage Temp: -20 to +55Deg.C<br />6 .More Than 12 Years Data Retention<br />7.Support Windows10 Windows 7 / 8・Windows Vista・Windows 2000・Mac OS X・ Linux.<br />8 .Easy to read and read in high speed ・No need drive/power supply only plug in.<br /><br />Package Included:<br />1x U disk<br /><br /><br />Shipping Detail:<br />We shipped within 12- 24 hours.<br />Hope you enjoy this prouduct. I wish you a happy day.<br /><br />Capacity:<br />64GB (actual display capacity between 60G -64G)<br />128GB (actual display capacity between 118G -128G)<br />256GB (actual display capacity between 225G -256G)