I am hoping that I received a defective product and that my experience is rare, but this product did not work as intended. I was replacing another 32G micro sd card thinking that, because this is a Class 10 rated product, it would be faster. It never worked correctly. It kept dismounting unexpectedly, losing data, and was just not worth the money AT ALL! I ended up using my slower rated product which has worked reliably since the day I bought it. I only wish this product had done the same.