Review on Amplim 128GB MicroSD Card with Adapter - Ultra-Fast, High Capacity Memory for Nintendo-Switch, Go Pro, Phone Galaxy, Surface, Camera Security, Tablet - Class 10, UHS-I, V30, U3 by Kevin Hernandez

I recently tested several 16GB and 32GB cards for use in a Raspberry Pi application. The tests were performed in CrystalDiskMark 7.0 with the Real World profile. While this card delivered an ultra-fast sequential read speed of 88MB/s and an acceptable 4K random read speed of 9.7MB/s, its sequential write speed of 10.5MB/s and random 2.9MB/s hardly qualify it as Class 10... not to mention the A1 card. If you are looking for a fast and cheap micro SD card, take a look at this one: https://smile.amazon.com/gp/product/B0834R2C6T/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc= 4x speed.