Team Xtreme UHS-I Class 3 memory card series complies with the new generation SD/microSD memory card specifications-UHS-I U3, and has further increased the minimum writing speed to 30MB per second; it is able to provide smooth high definition recording qualities when used with cameras and handheld devices that supports UHS-I. Team Xtreem UHS-I Class 3 has reading and writing speeds up to 90MB and 45MB respectively, allowing professional photographers to record and take Full HD, 3D and 4K videos and photos with no worries