This adapter is very small and very thin, it hides easily into a small purse. I have it in my pocket for more than two years without finding the slightest flaw. I'm not interested me however to flow, but I do not see any particular slowness to use whether to back up files, play videos including HD (1920 * 1080) or listen to music including HD (192KHz, 24 bits). It is compatible with Micro SDHC cards and micro SDXC cards. It is obviously recognized by a PC and Android phone with a USB Host port.
