SanDisk - Here's a breakdown of what the various symbols on a memory card refer to: 1. Maximum speed the card reads (transfers) files 2. Maximum speed the card writes (captures)
KIOXIA 128GB EXCERIA microSD Memory Card U1 Class 10 100MB/s Max Read Speed, Full HD Video Recording, Blue : Amazon.it: Informatica
Understanding specifications printed on the Micro SD card : r/coolguides