USB Flash Drives & OTG M3.0 Pen Drive 128GB 256GB OTG Dual Flashdrive

About capacity:
16GB=approximately 14GB-15GB
32GB=approximately 28GB-30GB
64GB=approximately 58GB-60GB
128GB=approximately 117GB-124GB
200GB=approximately 182GB-186GB
256GB=approximately 230GB-249GB
512GB=approximately 460GB-499GB
1TB=approximately 920GB-980GB
Vendors are using Flash memory decimal arithmetic: 1 MB = 1000KB, 1G = 1000 MB
Calculated, operating system with binary arithmetic: 1 MB = 1024KB, 1 GB = 1024 MB;
So there are some differences between display capacity and nominal capacity of flash memory products