I have the wrong ears for them - they do not stay securely in my ears (even though I have tried all three sizes of fitting, so may not be for you if you want to wear them running.
The touch settings are amusing, but I switched them off because I had to keep pushing them back into my ear, producing other actions.
Seamless syncing with a Samsung phone, for receiving phone calls while listening to music.
No good for a full day on the beach, as battery life is only 4 hours withough recharging in the case.