I use these primarily with bluetooth, I have not used the memory card slot, but I have tried the FM tuner.
Pros: Bluetooth works well, it has a range similar to what is advertised (10m).
Cons: The FM Tuner is virtually useless. It is difficult to tune and any movement or your head causes static. However, the most annoying thing about this headset is the voice that the manufacturer uses to inform you of the status of the headset; i.e. "Bluetooth mode", "recharge battery", etc. It is difficult to understand what they are saying, and it is way too loud with no way to change the volume of the announcements.