I purchased these to use at the gym they have a great sound to them but I would have preferred if they had loop over the ear fittings, this would make them much more secure.

I bought this about 2 weeks ago to use at the gym, and I've been loving it ever since. I go to the gym for an hour every day, and I only have to charge it once every week. They fit comfortably around my ears, so much so that I sometimes forget that I have them on! The arc earpieces help to keep the headphones secure no matter how much I move around. These headphones have decent mids, but it lacks a bit in bass. The mic doesn't seem to be very sensitive as I find that people sometimes have to raise my voice substantially before they can hear what i said.

Having found the need for a cable-connection-free headphone set (or Bluetooth!) I looked at various models and decided these Sony AS600BT ones were going to be the most suitable. Wow, I've been really impressed and am certain that you will be too :-)