Micro Sd Card. 1.Micro SD Card 2.Plug and Play (no Software Needed) 3.Micro SD + TF Format,High-speed Read and Write 4.4GB,8GB,16GB,32GB,64GB 128GB Storage Size 5.Applies to Cell Phones, Cameras, MP3/MP4 Player and More Device 6.Comes with Adapter to Bring to SD Card 7.Can Be Used As Micro SD or SD Card 8.Operating Temperature -13 F to 185 F (-25 C to 85 C) 9.Storage Temperature -40 F to 185 F (-40 C to 85 C) Warm Tips( 2.0USB Reader Test Result) : 4GB-Class 6-SDHC 8GB/16GB/32GB-Class 10-SDHC 64GB/128GB-Class 10-SDXC Class 6: Read Speed Around 15-20MB/S ,Write Speed Around 6-8MB/S Class10: Read Speed Around 15-30MB/S ,Write Speed Around 9-12MB/S The Micro SD Card Speed is Based on Internal Testing; Performance May Be Lower Depending on Host Device, Interface, Usage Conditions and Other Factors. Micro SD Card Speed is Greatly Affected by Card Reader, Adapter, USB Port Etc. Low Quality Device Will 100% Slow Down Card Speed. HardwareFeatures: Originalhighqualityflashmemory ManufacturedinTaiwan Assembledin About Capacity: 4GB=approximately 3.6GB-3.8GB 8GB=approximately 7.2-7.6GB 16GB=approximately 14.4GB-14.8GB 32GB=approximately 28.5GB-30GB 64GB=approximately 58.5GB-60GB 128GB=approximately 110GB-120GB This is Calculation Difference Between Manufacturer and Our PC,just for You Reference. Package : 1 X Micro Sd Card 1 X Free Adapter 1 X Free Retail Package. We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.