Summary: If you're an old fogey like me and just want to listen to the radio while jogging and don't download tons of music on to a cell phone, this radio does the trick. Lots of presets, light weight, durable with a good arm band. Programming isn't too bad. Only problem is when you change the battery you lose all the preset stations, which is annoying, particularly since the battery life (one "AAA") isn't that long.
Summary: Just received this item and have enjoyed it during morning walks. The earphones take a bit of time to get used to as they need frequent adjustments to maintain position; they tend to go in the ears sideways as opposed to ear buds or other type of headsets. It simply was a matter of getting accustomed to the different positions. I also found that the antenna was not particulaly strong in picking up distant stations.
Summary: Sound for this unit is adequate for this type of radio. Control button layout just stinks. Analog volume control is on an outside corner unprotected - constantly changing. Lockout feature does not work on volume. Power button is on top-always turning off.(should be 3 sec. holddown). Headphone plug-in on top of unit-easy to tangle with hand. I would think SONY could do better.
Summary: Bought this as a back up for my wife. She has been using one of these for 6 years for running. Personally, I can't stand using the armband or the belt clip, having the speakers stuck in my ears, or headphone cords flopping around. I use an old-tech, over the head Walkman with everything built in to the largish earpieces. She, of course, thinks that heavy old-tech thing is kind of dumb. At any rate, she raves about the performance of this S2 and its water resistance.