This higher-speed SanDisk Extreme microSD variant trades the A2 app performance rating for faster sequential speeds — up to 245 MB/s read and 170 MB/s write — making it the better pick for sustained 4K/5.3K action cam footage where buffer clearing matters more than app load times.
SanDisk Extreme microSD (Action Cam Edition) Specifications
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Type: microSD
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UHS Bus: UHS-I
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Speed Class: V30
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Read Speed: Up to 245 MB/s
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Write Speed: Up to 170 MB/s
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Available Capacities: 64GB, 128GB, 256GB, 512GB
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Endurance: Standard
Who Is This Card For?
Pros & Cons
Pros
Highest sustained read/write speeds in the Extreme microSD line. Built for 4K/5.3K action cam footage.
Cons
No A2 app performance rating — tuned for sustained video, not app storage.
Alternatives to Consider
Choose the standard SanDisk Extreme microSD instead if you also use the card for app storage on a phone or Switch, since it carries the A2 rating this edition lacks.
Where to Buy
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