It's hard to believe they can cram 32gigs of memory into a device this tiny and also get good speed out of file transfers to and from it.  It's a good thing it comes with an adapter for larger size devices--I recommend keeping it in that adapter at all times unless it's inside something like a cell phone which only takes the MicroSD size.  It's way too easy to lose something this small.  I hate the industry's mad rush to make everything smaller and smaller with no regard to usability.  Anyway, the memory card is great outside of that, and since my phone does take MicroSD, I just keep it plugged in at all times and don't have to worry about it.