The Kitsound KS1 stereo earphones are the perfect companion for music lovers around the globe. Featuring a 3.5mm jack connection the KS1s are compatible with most mobile handsets iPhones iPods and MP3 players and reduces background noise for improved listening. They boast 18Hz - 21kHzs of frequency response and 112dbs of sensitivity as well as featuring a tangle free cord and soft earbuds for comfort and ease and have been given a contemporary metal finish.