Microsd memory card an extremely fast memory that accompanies you everywhere extremely high read and write speeds ultrafast pro plus microsd card from samsung sets new standards for extreme sports and action photography the card is compatible with uhs i speed class 3 u3 and class 10 and therefore is perfect for 4k uhd video recording and playback and with a stunning read speeds of 95 mb s and a write speed of 90 mb s there is only a minimal delay in the transmission of files and at th