SanDisk Extreme micro SDXC UHS-I A2 V30 U3 Memory Card

Storage Capacity and Speeds:

128GB

Model: SDSQXAA-128G-GN6MN

Speeds Up to: 190MB/s (Read), 90MB/s (Write)

256GB

Model: SDSQXAV-256G-GN6MN

Speeds Up to: 190MB/s (Read), 130MB/s (Write)