Review on SanDisk 64GB Micro SDXC Extreme Pro Memory Card (2-Pack) Compatible with GoPro Hero 8 Black, Max 360 Action Cam - U3 V30 4K Class 10 (SDSQXCY-064G-GN6MA) Bundle Including 1 Everything But Stromboli Card Reader by Johnny Bloomer

Overall it was a good deal. However, on the first microSDXC card I opened, I was only able to get write speeds of 2MB/s. I tried different SD card readers (same result) and different microSD cards I had on the same devices (much faster speeds). That means the SD card was either defective or fake. (Warning: packaging etc. looks real - let's leave the third-party seller the right to doubt). On the plus side, the microSD card reader works well with every other microSD card I've seen read speeds up to the maximum spec for those cards. Revain helped me get my item back quickly - so thanks for that too.