1TB Micro SD Card 1TB TF Card 1TB Memory Card Class 10 Micro SD Memory Cards 1TB High Speed with SD Card Adapter for Smart-Phones,PC,Camera

About capacity: 128GB=approximately 116GB-120GB 256GB=approximately 228GB-236GB 512GB=approximately 462GB-490GB 1024GB=approximately 942GB-958GB This is calculation difference between manufacturer and our PC, please Google 'Memory card capacity' to get more information. Warm Tips: 1.Our Store offers memory card with 1 year warranty. 2.Please use quaity card reader to verify all memory card on PC. 3.Please don't use cheap card reader to test memory card, speed of memory card will be reduced by low quality card reader. 4.Memory card speed is greatly affected by card reader, adapter, USB port etc.5.Up to 15MB/s read speed; write speed lower. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 6.If you have any questions about this card, please contact us directly through Amazon. thank you for coming!