Micro SD Card Mini SD Class10 32GB 64GB 128GB 256GB High Speed Write Super Compatibility Phone Camera Meomory Card

About capacity:

32GB=approximately 28GB-30GB

64GB=approximately 58GB-60GB

128GB=approximately 115GB-119GB

256GB=approximately 230GB-238GB

Vendors are using decimal arithmetic: 1MB = 1000KB, 1G = 1000MB calculated, but the operating system is using binary arithmetic: 1MB = 1024KB, 1GB = 1024MB. So there are some differences between display capacity and nominal capacity of flash memory products.