Set of 9 High-performance 256GB SanDisk Extreme microSD cards with a read speed of 190MB/s and a write speed of 130MB/s, perfect for 4K video recording. - Brand: SanDisk - Model: Extreme - Capacity: 256GB - Speed: 190MB/s (Read) / 130MB/s (Write) - Class: UHS-I, U3, V30, A2 Thank you for viewing.