Atrio Future Sonic 010-045 Earphone with MG7 Pro technology (Onyx Black) (Discontinued by Manufacturer) For Use with: Concert Stage, recording studio, houses of worship, broadcast. Works great with: iPod, Zune, MP3 Digital Media Players, Laptop Computers, Portable DVD Players, Playstation, GameCube & most other game systems Multiple Fit Options 100% Armature & Crossover Free Technology Professional dynamic drivers Crossover-free architecture 100% armature-free design 18Hz-20000 TruTimbre sound for a richer listening experience than most multiple driver earphones Multiple fit options, carrying case, and loop cleaning tool included