SanDisk Extreme 32GB microSDHC UHS-I/V30/U3/Class 10 Card with Adapter (2-Pack) Up to 90MB/s read speed and up to 60MB/s write speed UHS-I/V30/U3 --- Meets the new UHS Speed Class 3 (U3) and UHS Video Speed Class 30 (V30) for superb 4K UHD videos Class 10 to record Full HD video (1080p) and 3D video Each order is for 2 units of SanDisk Extreme microSDHC UHS-I (32GB) and 1 Adapter Built for extreme conditions; temperature proof, water proof, shock proof, and x-ray proof