Simply the right card More space and higher speed. Free up your devices with the largest capacity and highest read/write speeds in its class| perfect for 4K UHD video.* With astonishing performance and reliability| EVO Plus lets you save and treasure the richness of life. * 4K UHD video support for 512GB| 256GB| 128GB and 64GB cards. Host device compatibility may vary. Fulfill your need for speed Record and play 4K UHD video without glitches. With superfast read & write speeds up to 100 MB/s & 90 MB/s respectively| the 512GB EVO Plus lets you transfer a 3GB video to your notebook in just 38 seconds.* Shoot flawless high quality photos and videos| and share them all in an instant. * The foregoing read & write speeds are based on internal tests conducted under controlled conditions. Actual speeds may vary depending upon card capacity. *Evo Plus 32GB: Read Speed Up To 95Mb/s| Write Speed Up To 20Mb/s *Evo Plus 64GB: Read Speed Up To 100Mb/s| Write Speed Up To 20Mb/s| Class 10 U1 FHD *Evo Plus 128GB: Read Speed Up To 100Mb/s| Write Speed Up To 60Mb/s| Class 10 U3 4K UltraHD *Evo Plus 256GB: Read Speed Up To 100Mb/s| Write Speed Up To 60Mb/s| Class 10 U3 4K UltraHD Evo Plus 512GB: Read Speed Up To 100Mb/s| Write Speed Up To 90Mb/s| Class 10 U3 4K UltraHD Capacity to live large Never worry about space again. A massive memory of 512GB is enough for 24 hours of 4K UHD video| 78 hours of Full HD video or 150|300 photos. So go ahead and savor all of what life has to offer and keep it all too. * Test Device : Samsung Galaxy S9+For 32GB| FAT32 file system is used and for 128GB / 512GB| exFAT file system is used. ?? 3840x2160 4K UHD(30 fps)| Average file size recording for 30 mins : 10.1GB ?? 1920x1080 Full HD(30 fps)| Average file size recording for 30 mins : 3.09GB ?? 4032x3024 12MP| Average file size : 3.25MB??? Average MP3 file size : 6.2MB Extended compatibility Compatible with a wide range of devices for both SD and micro SD. You can even capture detailed 4K UHD video.