SanDisk Extreme microSDXC™ UHS-I CARD - 256GB

Tested and certified to work seamlessly with Chromebooks 
Up to 120MB/s transfer speeds let you move photos and files fast
Class 10 for Full HD video playback – watch right from the card
Water-proof, temperature proof, X-ray proof, magnet proof, shock proof  
Capacity
256GB
Form Factor
microSDXC™
Sequential Read Performance
Up to 190MB/s
Sequential Write Performance
Up to 130MB/s