The SanDisk Extreme microSDXC memory card utilizes SanDisk QuickFlow technology (64 GB to 1 TB) for read speeds of up to 190 MB/s, allowing you to transfer your media files even faster. When paired with the SanDisk Professional PRO-READER for SD and microSD cards (sold separately), you can achieve maximum speed. With a write speed of up to 130 MB/s, it is ideal for Android smartphones, action cameras, or drones. This powerful microSD card can record 4K UHD videos, Full HD videos, and high-resolution photos. Additionally, thanks to its A2 rating, it ensures outstanding app performance on your smartphone.