2Pcs Kodak Original Micro TF SD Cards 64GB U3 V30 Flash Card 4K Full HD Memory Card TF Memory for Phone/Computer with SD Adapter

About capacity:

32GB Approximately 28 GB-30 GB.

64GB Approximately 56 GB-60 GB.

128GB Approximately 115 GB-119 GB .

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.