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The SanDisk Extreme Pro 32GB is a UHS-I microSDHC card rated U3, V30 and A1, with SanDisk quoting up to 100MB/s read. The V30 rating covers sustained 30MB/s writes, which is the floor for 4K video on many cameras and drones, and the A1 rating targets app performance on Android devices. It suits action-camera and drone owners who record 4K, plus phone and tablet users who want faster app loading. Against cheaper Class 10 cards it adds a write-speed guarantee for video; against UHS-II or V60/V90 cards it is slower for high-bitrate cinema work, and 32GB fills quickly with 4K footage.
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Lowest price we've seen: $39.99 on Nov 14 at Newegg. Tracked across 1 store since Nov 14.
Owners of the Extreme Pro microSD line generally report it holds up in action cameras, drones and phones, with steady 4K recording and fast offloads. Complaints tend to focus on real-world write speeds falling short of the headline read figure and on cards failing after heavy use.
This SanDisk Extreme Pro is a 32 GB microSD memory card. It is rated at 100MB/s and uses the UHS-I interface.
The card carries Class 10, U3 and V30 speed ratings, plus an A1 app performance rating.
