Micro SD Features: 
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<br />·32GB/64GB/128GB/256GB Class 10-SDXC-UHS1 speed 
<br />·Original high quality flash memory 
<br />·Manufactured in Taiwan / Korea 
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<br />Warm Tips: 
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<br />  ·100% genuine memory card 
<br />   ·Please use quaity card reader to verify all memory card by H2testw on PC 
<br />   ·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 
<br />   ·The most reliable software to verify memory card is H2testw 
<br />  **Micro SD card speed is greatly affected by card reader, adapter, USB port etc. Low quality device will 100% slow down card speed. 
<br />  **Up to 40MB/s read speed; write speed lower. Based on internal testing; performance may be lower depending on host device, interface,usage conditions and other factors. 1MB=1,000,000 bytes.