Excellent quality, fashionable appearance design, 5 Colors to choose this earphones is the best choice for you. Standard 3. 5mm audio jack, length is about 3 feet or 1 meter. Works on all Mobile phone and other MP3 Players. Plug in headphones will be able to enjoy the fun of music, it is very convenient and comfortable. All earphones have been selected carefully, and were heavily tested before sending to you. Whole package includes 5 pieces of earphones, and each earphone has a different color.