32GB microSDHC CL10 UHS-I 90R/45W. Kingstons SDCA10 Class 10 UHS-I (Ultra High-Speed Bus, Speed Class 1) microSDHC card delivers 90MB/s read and 45MB/s write speeds; it reads up to 9x faster and writes up to 4.5x faster than standard Class 10 microSDHC/SDXC cards. UHS-I U1 technology lets users shoot full HD video, 3D video and realtime broadcasts without interruption and capture images continuously on their phones. Higher sustained write speeds ensure video integrity by reducing stutter and faster transfers free up user's time, especially when using Kingston USB 3.0 card readers.