The sound of this places the MP3 largely among the best. The volume allows a large helmet (very powerful volume). To be clear, with intras we will not push the volume too if we grate the eardrums! This is a very good device. The price is what it is, but it is also a concentrate of technology. We would have liked a battery with a bit more autonomy, but it's still okay. Recharging is fast (with the pc or charging an iPhone). The touch is true to what Apple can do: very good.