I have tried numerous times to reach CELLMEM and they do not have a working phone number. I finally was able to leave a message and today someone called me back and when I answered they hung up immediately, as if they wanted to leave a message and not talk to me.

The very first benchmark test that we did on the SanDisk 32GB Extreme Pro UHS-II SDHC memory card was to test the speed differences between a common UHS-I compatible reader and then one of the new SanDisk UHS-II readers.

Works well, a good choice for older cameras.

I have recorded multitrack audio on these cards for many years without failure; only ever having to replace them due to clients failing to return media after delivering recordings.