B08GSW11G7 SanDisk 256GB Extreme Pro SD Card SDXC UHS-I Card for Cameras Works with Canon EOS R, M50, M100 (SDSDXXY-256G-GN4IN) 4K UHD Video Class 10 Bundle with 1 Everything But Stromboli 3.0 Memory Card Reader

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Compatible with Canon EOS R, M50, M100, Mirrorless Cameras
Can read speeds of up to 170MB/s speed. Write speeds of up to 90MB/s
UHS speed Class 3 (U3) and video speed Class 30 (V30) for 4K UHD video
The card of choice for professionals who need efficiency and speed in post-production