"SanDisk Ultra 64 GB microSDXC Class 10"

I'm using this in a SAMSUNG GALAXY S3 16GB unlocked smartphone and the only problem is as you write more and more flies to the card it gets slower and slower to the point that you'll be so p.o at a crucial moment , say for example you want to access a video or doc , that when you do actually get your file you've lost all faith in the card .So buy it for the capacity but always remember it's not reliable for fast access.

"Works great"

Bought this for my Samsung Galaxy Legend phone so I can store all my pictures and videos, works like a charm.