This Zipper Earphones has very well sound and very attractive to listen. Aslo special things in this earphone is its LOOKS..... Its oswam looks like zipper only. If you fillled this earphone in your ear its looks like you wear unvisiable jacket. Just saw the looks in the image. its very diffrent from other and also hd sound to hear. - Excelent sound qualities. Its Bass Universal 3.5mm Stecker.