Silicon Power 64GB MicroSDXC UHS-1(U3) 90/80 MB/s, Superior Pro Memory Card with Adaptor (SP064GBSTXDU3V20SP) Meets the new UHS-I Speed Class 3(U3) specification: idea for high-speed continuous shooting of high quality images and extended lengths of full HD, 3D and 4K videos Supports high quality video recording with excellent transfer speed of Speed Class 3 (U3) with at least 30 MB/s in writing Ultra high performance up to 90MB/s read and 80MB/s write Compatibility:HERO4 Black, HERO4 Silver, HERO4 Session, HERO3+, HERO3, HERO+ LCD, HERO