Right now, Amazon is running a sale on select Sandisk 64GB microSDXC cards. We're looking at the 64GB microSD card for just $35.26, which typically sells for about $99.99. So that's a pretty darn good price. The 128GB version is typically $119.99, so great pricing here. Reformat into file system other than exFAT may cause instability. Only compatible with SDXC enabled device in exFAT format per SD Standard. Highest Full HD video recording performance available with class 10 rating. Ideal for Android, other smartphones and tablets. UHS-1 enabled. Faster app performance with transfer speeds up to 30MB/s. Ships in Certified Frustration-Free Packaging. Water-proof, temperature proof, X-ray proof, shock proof.