Kingston's SDCA10 Class 10 UHS-I micro SDXC card delivers 90 MB/s read & 45 MB/s write speeds; it reads up to 9x faster & writes up to 4.5x faster than standard Class 10 micro SDXC cards. UHS-I U1 technology lets users shoot Full HD video, 3D video & real-time broadcasts without interruption & capture images continuously on their phones. Higher sustained write speeds ensure video integrity by reducing stutter & faster transfers free up user's time, especially when using Kingston USB (Universal Serial Bus) 3.0 card readers. In 64 GB capacities, SDCA10 Class 10 UHS-I let users record more video without changing cards. Smartphone, tablet & small-format camera users will benefit from the enhanced transfer speeds & performance gains offered by the SDCA10 Class 10 UHS-I card, which is compatible with micro SDXC host devices & not compatible with standard micro SD-enabled devices & readers.