At about 1 ounce, the Shure E4 earphone is likely the most comfortably designed earphone. Even the wire has been engineered to fall gently behind your ears for complete, unobtrusive support. It employs advanced Shure tuned port microspeakers for exceptionally wide dynamic sound range from grand lows to crisp highs with acoustically natural sound performance. Special fit kit (included) promotes maximum acoustic isolation from all ambient sounds around you....   Show More

At about 1 ounce, the Shure E4 earphone is likely the most comfortably designed earphone. Even the wire has been engineered to fall gently behind your ears for complete, unobtrusive support. It employs advanced Shure tuned port microspeakers for exceptionally wide dynamic sound range from grand lows to crisp highs with acoustically natural sound performance. Special fit kit (included) promotes maximum acoustic isolation from all ambient sounds around you. This lets you enjoy your music, uninterrupted, at a volume that you can appreciate.   Show Less