Designed to provide reliable performance for action cameras and drones, the 64GB FLY UHS-I microSDXC Card from Lexar lets you quickly capture and transfer media files, including UHD 4K and Full HD video, as well as raw and JPEG photos and rapid shutter bursts. This card was built with the UHS-I bus and delivers read speeds up to 160 MB/s and write speeds up to 90 MB/s. Also supported are the Video Speed Class 30 (V30) and UHS Speed Class 3 (U3) class ratings, both of which deliver write speeds that are guaranteed not to drop below 30 MB/s.