Bought it from Ebay. Didn't last a month. Used it for my Xperia Z smartphone. It showed that it is a 64 gb micro sdxc card from my mobile device then after more than 3 weeks my phone showed an error message saying
"card unexpectedly removed" when it is inserted the whole time and I never even tried taking it out since I installed it. Inserted it in my laptop, nothing. Laptop cannot read it. It's basically useless after what happened. All data was gone.