[DETAIL] About Real Capacity 32GB=approximately 28GB-30GB 64GB=approximately 58GB-60GB 128GB=approximately 115GB-119GB 256GB=approximately 230GB-238GB The ex-factory capacity of Micro SD Card products is calculated as 1MB=1000KB and 1G=1000MB. The operating system USES binary algorithm, namely 1MB=1024KB,1GB=1024MB. Therefore, the display capacity of Micro SD Card products is about 90% of the nominal capacity, which is a normal phenomenon. Warm Tips How 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 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. Notice 1. Our Store offers 100% genuine products. 2. All products are in compliance with the Sandisk official website. 3. Manufacturer's reserve the right, at their sole discretion, to change or modify products. Appearance and packaging design may change without prior notice. 4. We are not responsible for any changes or modifications that manufacturer's make to products. [ATTRIBUTES] - Hign-concerned Chemical: None - SD Type: microSDXC - Application: High Speed Read and Write,MOBILE PHONE,Tablet,NOTEBOOK,Tachograph,Camera,Monitoring,Speakers,Digital Devices,File Storage,others - Hign-concerned Chemical: None - SD Type: microSDXC - Application: High Speed Read and Write,MOBILE PHONE,Tablet,NOTEBOOK,Tachograph,Camera,Monitoring,Speakers,Digital Devices,File Storage,others - Application Performance Class: A1 - Video Speed Class: V10 - UHS Level: U1 - Class Level: C10 - Package: Yes - Type: TF / Micro SD Card - Brand Name: SanDisk - Origin: Mainland China - Certification: CE