Seadream 6 inch 4-Pole 3.5mm Male to 2.5mm Female Headset Audio Adapter Cable Extender Stereo Jack (1Pack) Keeping the great clear audio quality of your music. Specifications: 3.5mm 4 poles male to 2.5mm female adapter cable Male End of the adapter is 3.5mm, Female End is 2.5mm. Support audio and microphone and work for Iphone and Android Allows to use your favorite 2.5mm jack headset on 3.5mm Mobile Phone