The SanDisk Extreme MicroSDXC memory card uses the SanDisk QuickFlow technology for a reading speed of up to 170 MB/s so that you can transmit your media files even faster. In combination with the Sandisk Professional Pro reader for SD and microSD cards, you can reach the maximum speed (available separately). Thanks to a writing speed of up to 80 MB/s, it is ideal for Android smartphones, action cams or drones. 4K UHD videos, full HD videos and high-resolution photos can be recorded on the powerful microSD card.