Will it make any difference in data transfer speed if I use Class 2, 4, 6 or 10 micro SD card on MP860/MP870? Categoría : Setup / Operation "No matter which class of micro SD card you use on MP860/MP870, the read/write speed would be the same.Note: the speed here refers to the direct read/write speed of the MP860/MP870 to the micro SD card, not the computer's." Is the answer helpful? Relacionado Lyrics are not displayed correctly on my MP3. How can I set the lyric syncing function? My music player cannot be charged. How can I listen to the source audio while line-in recording? Soporte Técnico If the answer can't help you, you can contact the Tech Support Department Empezar