Up to 100MB/s read and 60MB/s write speeds; UHS Speed Class U3 and Speed Class 10 (performance may vary based on host device, interface, usage conditions, and other factors) Ideal for 4K UHD video recording, high-res photos, gaming, and music; For smartphones (Galaxy S10, S10+, S10e, S9, S9+, Note9, S8, S8+, Note8, S7, S7 Edge, other Android devices, etc.) and tablets, gaming consoles, laptops, action cameras, DSLR’s, drones, and more Samsung 64GB MicroSDXC EVO Select Memory Card w/ Adapter With stunning speed and reliability, the Samsung 64GB MicroSDXC EVO Select memory card lets you get the most out of your devices. Ultra-fast read & write speeds of up to 100MB/s & 60MB/s and backed by 4-proof protection, keep your data safe against water, extreme temperatures, and other harsh conditions. Feel confident to capture, store and transfer 4K UHD videos, photos, music and other large files effortlessly. Your memories and adventures are irreplaceable, and now unforgettable.