Features: 1.Made of heavy metal, the flash drive, with classic auto?adsorption USB metal cover, is attractive and has better handtouching. 2.After electroplating process, the USB drive with an eggshell shape is styllish and beautiful in appearance. 3.Support USB3.0 and backward compatibility, can be used without external power supply or battery, support more than 5000 plugs and unplugs. 4.The high speed USB drive possesses a writing rate over 15mb/s and a reading rate above 80mb/s. 5.This product can be easily used and operated that you only need to plug and then use. specification:Item Type: Flash Drive Model: K30 Interface: USB3.0 interface Service Life: More than 5000 times Normal Writing Rate: 15mb/s or more Normal Reading Rate: Above 80mb/s The Maximum Reading Rate Can Reach: 100mb/s Support USB3.0 and backward compatible It can be used without external power supply or battery System Support: For Win7 / OS X, etc. PackageList:1 xFlashDrive 1 x User Manual NoteProduct writing rate and reading rate may vary slightly due to different devices. Performance may decrease, depending on the host device. 1 gb = 1,000.00000 bytes The actual user storage may be smaller.