The SanDisk Ultra microSD UHS-I card gives you the freedom to shoot, save and share more than ever before. It is perfect for recording and watching Full HD video,(2) with room for even more hours of video. Transfer speeds of up to 100MB/s** help you move all your content blazingly fast—up to 1000 photos in just one minute.(6) Ideal for Android-based smartphones and tablets, this card’s A1 rating means that you can load apps faster too.(1) And, with capacities up to 512GB* capacity, this card lets you capture and store more than ever before. | * 1GB=1,000,000,000 bytes. Actual user storage less. | ** [for 64GB-512GB] Up to 100MB/s read speed; write speed lower.