Enjoy blazing speeds for lightning-fast data transfer, fast app performance and 4K UHD videos. This high-performance and perfect for Android smartphones, sports cameras and drones microSD card allows you to record 4K UHD and Full HD videos and take high-resolution photos. The super-fast SanDisk Extreme microSDXC memory card reads data at up to 170 MB/s and writes at up to 80 MB/s. In addition, the A2 performance class ensures fast application performance, making using your smartphone more fun Product features: - Card type: microSDXC - Capacity: 64 GB - Speed class: UHS-1 - Read speed: 170 MB/s - Write speed: 80 MB/s