Looking for a suitable memory card for my GoPro Hero 4 Black Edition, I'm pretty fast on the Lexar 64GB 633x SDXC (Class 10 LSDMI64GBBEU633R Micro SDXC) encountered. It offers much of the UHS-I technology transfer speeds of up to 633x (95MB / s) and is thus for the GoPro or other cameras where fast transfer speeds are predestined. Fast recordings at 1080p, Full HD or 4K recordings are no problem. With the USB 3.0 Reader delivered to then be stored data again quickly transferred to the PC.