3.5mm 3-Ring Mini-Stereo Headset Mic & Audio Extension Cable. Extends any 3.5mm 3-ring ports or devices. Specifically designed for computer & smartphone audio & mic headset applications. It works with any PC or laptop, speakers, headsets, smartphones, tablets, mp3 players or microphones with a 3.5mm connector. This cable has a PVC jacket and moulded ends. (Connectors: 3-Ring 3.5mm Male to Female).