Here we have a 64GB MicroSDXC from SanDisk. This is the UHS-1 Model which carries a manufacturer rated speed of roughly 30MB/s Read and 10MB/s Write.
Product Name: SanDisk Mobile Ultra 64GB MicroSDXC Flash Card
Model Number (For your Reference) SDSDQUA-064G-A11A
NewEgg ships for free to the Contiguous 48 with a 5-per-customer limit.
Here's a link to an XDA forum thread about it. It's rather dated but should be pretty relevant - http://forum.xda-developers.com/showthread.php?t=1699511