Bargain I think!, purchased for my go-pro4, actually purchased a couple!!!
Quickly capture, play back, and transfer multimedia files, including HD, 3D, and 4K video. Includes microSD UHS-II USB 3.0 reader
Designed for your sports camcorder, tablet, or Smartphone, Lexar 1000x microSDHC/microSDXC UHS-II cards 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-II technology (UHS Speed Class 3 (U3)) to deliver high-speed performance up to 1000x (150MB/s).1 The cards also come with a microSD UHS-II USB 3.0 reader, allowing you to experience high-speed file transfer, right out of the box. 2 Cards also include a lifetime copy of downloadable Image Rescue software.
Lexar 64GB MicroSDHC UHS-II Class 10 Memory Card