Ideal for use with smartphone, tablet, or action camera 64GB capacity provides enough space for storing more files 100MB/s of maximum read speed enables quicker loading times, faster data transfer, and smoother playback of high quality media files such as 1080p Full-HD, 3D, and 4K UHD videos UHS Class 1 technology allows quicker data access and enhanced performance during high-definition video recording Includes SD adapter for convenience