Capacity flash memory products are usually shipped in accordance with 1MB = 1000KB, 1G = 1000MB computing, but the operatingsystem using binary arithmetic 1MB = 1024KB,1GB = 1024MB, so there are some differences between the display capacity and standard capacity memory products.This is calculation difference between manufacturer and our PC.

16GB = approximately 14GB-15GB

32GB = approximately 28GB-30GB

64GB = approximately 58GB-60GB

128GB=approximately 110GB-120GB

This is calculation difference between manufacturer and your PC, please Google 'USB Flash Drive capacity' to get more information.