content: I am working out with Nordic Walking or commuting by bike. My needs, having ear-buds that could not easily fall off and Volume control handy seem to be covered by this Sennheiser product. Testing it for 4 weeks confirmed the supreme standard of Sennheiser products also the lanyard and analog volume control - I use a 1GB Maxfield Flash MP3 player - but sorry to tell, I wear the player in a arm-wrap-around velcro-closed carry case, the provided extension cable is too long and the jack cable going into the volume control is too short.After using it now for 5 month I frequently faced the fact that the earbuds tent to fall out because they are to big - there is not additional silicon ring for adjusting to several earhole sizes...Sennheiser could easily fix this by adding by 2 inches and adjusting rings.... quote: 80%.