Kingston Usb Flash Drive Pendrive Memory Stick 32gb 64gb High Speed Usb Flash Memoria cle usb 3.0 Pen Drive U Disk

Kingston Usb Flash Drive Pendrive Memory Stick 32gb 64gb High Speed Usb Flash Memoria cle usb 3.0 Pen Drive U Disk

About REAL Capacity

32GB  = approximately 28GB-30GB

64GB  = approximately 58GB-60GB

This is calculation difference between manufacturer and your PC, please Google 'Memory card capacity' to get more information.

For your reference 

Your PC says 1GB = 1.073741824 Billion bytes where Market Defines 1 GB = 1.00 Billion bytes.

Warm tips
Please verify all Flash disks by H2testw on PC
Please test accordng to the port type to test flash disks, if not , speed will be reduced 
**flash disk is greatly affected by card reader, adapter, USB port etc. Low quality device will 100% slow down card speed.

**Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors.