Memory Sd Card. Description: 1.Micro SD Card + SD Adapter(free Gift) 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 -13ordm F to 185ordm F (-25ordm C to 85 Ordm C) 9.Storage Temperature -40ordm F to 185ordm F (-40ordm C to 85ordm C)   Warm Tips ( 2.0USB Reader Test Result) : 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.   Hardware Features: Original High Quality Flash Memory Manufactured in Taiwan Assembled in   About Capacity: 4GB=approximately 3.6GB-3.8GB 8GB=approximately 7.2GB-7.6GB 16GB=approximately 14.4GB-14.8GB 32GB=approximately 28.5GB-31GB 64GB=approximately 58.5GB-62GB 128GB=approximately 115GB-124GB Vendors Are Using Flash Memory Decimal Arithmetic: 1 MB = 1000KB, 1G = 1000 MB Calculated, Operating System with Binary Arithmetic: 1 MB = 1024KB, 1 GB = 1024 MB; This is Calculation Difference Between Manufacturer and Our PC,just for You Reference.   Package : 1 X Micro Sd Card with Free Adapter + 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.