Creative Aurvana In-Ear Earphones Precise audio reproduction is based on balanced armature driver technology Auraseal noise isolation technology blocks out up to 90% of ambient noise; nearly twice as effective as leading noise-cancellation headphones Ergonomically designed, contoured silicon earbuds ensure a comfortable, secure fit Works with all MP3 players/audio sources with a 3.5-mm stereo jack High-quality carrying case to protect your earphones from damage when storing away or traveling