Shure E2 Sound Isolating Earphones Enriched studio quality sound used by Musicians worldwide Built in High-Energy in-ear speaker technology Portable and lightweight design - weighing only one-ounce Sound Isolating in-ear design - Hear only what you want to hear Personal fit kit to contour to your ear size Sound Isolating in-ear design - Hear only what you want to hear Portable and lightweight design - weighing only one-ounce Personal fit kit to contour to your ear size Built in High-Energy in-ear speaker technology Enriched studio quality sound used by Musicians worldwide