Samsung 64GB PRO Class 10 Micro SDXC Card with Adapter up to 90MB/s (MB-MG64EA/AM) Up to 90MB/s Read and 80MB/s Write speed Storage Capacity: 64 GB Great Performance in Android smartphones, Tablet PCs, Action Cameras, and DSLRs Ideal for 4K content, Full HD Video recording and high resolution picture Rugged, Reliable, Built to Last: Water, X-Ray, Temperature and Magnetic proof