Jaster | High Speed Mini SD Memory Card 256GB Class 10 Micro TF Flash Usb Pen Drive Card 4GB 8GB 16GB 32GB 64GB 128GB for Smartphone

Feature:1. Smart SD Card + SD Adapter2. Plug and play (no software needed)3. Smart SD + TF format,Class 10 High-speed read and write4. 4GB,8GB,16GB,32GB,64GB,128GB,256GB Storage Size5. Applies to Cell Phones, Cameras, MP3/MP4 Player and More device6. Comes with Adapter to Bring to SD Card7. Can be Used as Smart SD or SD Card8. Operating Temperature -13ordm F to 185ordm F (-25ordm C to 85 ordm C)9. Storage Temperature -40ordm F to 185ordm F (-40ordm C to 85ordm C)About capacity:4GB = approximately 3.6GB-3.9GB8GB = approximately 7.4GB-7.8GB16GB = approximately 14.2GB-15GB32GB = approximately 28GB-30GB64GB = approximately 58GB-60GB128GB = approximately 110GB-120GBVendors are using Flash memory decimal arithmetic: 1 MB = 1000KB, 1G = 1000 MBCalculated, operating system with binary arithmetic: 1 MB = 1024KB, 1 GB = 1024 MB;So there are some differences between display capacity and nominal capacity of flash memory products.