Extreme Micro tf SD Memory Card 512GB 400GB 256GB 128GB 64GB/32GB microtf SDXC A2/microtf SDHC A1 UHS-I U3 UHD 3D 4K Video Cardsd memory card,card memory,sd micro card,memory card sd card Reliable performance Supplied with SD adapter About capacity: 32GB A1=approximately 28GB-30GB 64GB A2=approximately 58GB-60GB 128GB A2= approximately 114GB-120GB 256GB A2= approximately 224GB-240GB 400GB A2= approximately 360GB-380GB 512GB A2= approximately 460GB-476GB This is calculation difference between manufacturer(1GB=1000MB) and our PC(1GB=1024MB), please Google Memory card capacity to get more information
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