SD Type : SDXCApplication : High Speed Read and Write,NOTEBOOK,Camera,Speakers,Digital Devices,File StorageApplication Performance Class : A1Video Speed Class : V30UHS Level : U3Class Level : C10Package : YesRead/Write Speed : 50xType : SD CardBrand Name : Kodak : Mainland ChinaCertification : noneAbout capacity:64GB=approximately ?58GB-60GB128GB=approximately 115GB-119GB256GB=approximately 230GB-238GB512GB=approximately 460GB-480GBSteps to verify the Capacity and Speed of the memory card(1). Please use quality 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 the SD card, speed of the SD card will be reduced by?low quality card reader.(3). The SD memory card speed is greatly affected by card reader and the capacity you choose ,?USB port etc. Low quality device will 100% slow down card speed,1MB=1000KB.We Promise Only Sale : the Kodak SD /TF card !We are Top seller and Only one Support Official Verification for genuine Kodak , warm service ,the lowest price on !?Individual gifts may be of questionable quality, because this is a gift, so we do not support a , but we can compensate you again at the next shopping