SanDisk Extreme 128 GB Class 10/UHS-I (U3) V30 microSDXC - 160 MB/s Read - 90 MB/s Write SanDisk Extreme® microSD™ UHS-I Memory Card Get extreme speeds for fast transfer, app performance and 4K UHD vedio. Ideal for your Android™ smartphone, action cameras or drones, this high-performance microSD™ card handles 4K UHD video recording, Full HD video and high-resolution photos. The SanDisk Extreme® microSDXC™ memory card reads up to 160MB/s [100MB/s for 32GB] and writes up to 90MB/s [60MB/s for 32-64GB]. Great for Capturing 4K UHD Video Ideal for recording outdoor adventures, weekend trips, or sporting events without skipping frames. With up to 1TB, the SanDisk Extreme® microSD™ UHS-I card lets you capture uninterrupted 4K UHD and Full HD video with its UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings. Load Apps Faster with A2 Get faster app performance for an outstanding smartphone experience thanks to the SanDisk Extreme® microSDXC card's A2 Specification [Al for 32GB].