HeroNeo&reg; 3.5mm 4 Pole Male to Female Headphone Earphone Audio Adapter Mic Extension Cable It has 2 types of ports, 3.5mm male stereo plug and 3.5mm female stereo jack You can use it to connect any device with diameter 3.5mm to listen to music It is light and small that is very convenient for you to use Gold-plated molded connectors ensure a solid and high quality connection between the connected devices It can extent your original cable for about 1.17m which makes you act more flexibly and freely in your room, car and other places and spaces with your headphone