SAMSUNG Micro SD with Retail Package*1Speed:· 8GB -Class 6-SDHC(MB-MA08D)·32GB-Class 10-SDHC(MB-MC32G)·64GB/128GB-Class 10-SDXC (MB-MC64/128G)About capacity:·16GB=approximately 14GB-15GB·32GB=approximately 28GB-30GB·64GB=approximately 58GB-60GB·128GB=approximately 119GB-120GB·This is calculation difference between manufacturer and our PC, please Google ‘Memory card capacity’ to get more informationTips:How to verify the Capacity and Speed of the memory card?1). Please use quaity USB 3.0 card reader to verify all memory card by H2testw on PC. Real memory card should pass H2testw with no error.2). Please don\’t use cheap card reader to test Micro SD card, speed of Micro SD card will be reduced by low quality card reader.3). Micro SD memory card speed is greatly affected by card reader and the capacity you choose , USB port ect. Low quality device will 100% slow down card speed, 1MB=1000KB.