Samsung 32GB MicroSDHC Memory Card Pro UHS-I Class 10 Grade 1 with adptateur SD (Accessory)
After tests on my samsung galaxy tablet with SD TAB4 bench, writing and reading speeds are less than the specifications given by Samsung. (40 mo A50 / s for reading and 10 to 20 for writing instead of 90 and 80 maximum specified by the manufacturer).