"*Package Include:
<br />Choose ""64GB"":1PCS*64GB Usb Flash Drive
<br />Choose ""128GB"":1PCS*128GB Usb Flash Drive
<br />Choose ""256GB"":1PCS*256GB Usb Flash Drive
<br />Choose ""256GB(pack of 2)"":2PCS*256GB Usb Flash Drive
<br />
<br />Interface, USB Interface, without driver, plug-in and play, hot plug-in
<br />Compatible with PC, Notebook, MAC
<br />Support Windows 7/8/10,Windows Vista,Windows 2000,Mac OS X,Linux.
<br />Data: Data shall be retained for 10 years at further
<br />More than 1000000 times to wipe number: erasable
<br />The Self - protection: zero track protection, automatic antivirus
<br />
<br />Flash memory vendors are using decimal arithmetic: 1MB = 1000KB, 1G = 1000MB calculated, but the operating system is using binary arithmetic: 1MB = 1024KB, 1GB = 1024MB.    
<br />so there are some differences between display capacity and nominal capacity of flash memory products.However, this is allowed to exist. Please do not doubt his authenticity.t
<br />
<br />About capacity:
<br />
<br />8GB=approximately 6.9GB-7.3GB       t 
<br />16GB=approximately 14GB-15GB      t 
<br />32GB=approximately 28GB-30GBt 
<br />64GB=approximately 59GB-62GB
<br />128GB=approximately 118GB-124GB
<br />256GB=approximately 240GB-248GBt
<br />
<br />Refund&Change Policy:
<br />*If any defect happen within 5 Years,plese tell us,we will ship new one for FREE!
<br />*30 Days no reason to Refund!You never have to worry."