The Excellent Quality microSDHC 300X 16GB High-Performance - Do more with your tablet, sports camcorder, or smartphone Lexar® High-Performance microSDHC™/microSDXC™ UHS-I cards (300x) make it easy to quickly capture, play back, and transfer 1080p full-HD, 3D, and 4K video, as well as the highest-quality movies, photos, and songs. The cards leverage UHS-I technology to deliver high-speed, Class 10 performance up to 300x (45MB/s), and include an SD adapter for easy file transfer. These premium memory solutions give you the speed and space you need to enjoy more of your favorite multimedia on the go.