[2 Port 3.5mm Audio Switch] 1: Connect 2 audio sources to (IN/OUT)1 and (IN/OUT)2, use the 1/2 switch to one output. 2: Connect one audio source to IN/OUT, select an audio output between (IN/OUT)1 and (IN/OUT)2; (The output can be switched between speakers and headphones).[No external power supply required] Just plug and play, which does not require an external power supply, allowing you to listen to music. And it does not affect the sound quality at all. Note: Only one audio source is output at a time (you can switch between two audio sources)[One-key mute button] The audio selector has a one-key mute function that allows you to quickly stop playback. With this one-key mute design, it is convenient and useful under conditions, which works great for temporarily muting the sound.[Widely compatible] The audio selector supports most 3.5mm audio devices, such as mobile phones, headphones, PC, MP3/MP4, game consoles, etc. With this audio switch, you can quickly switch between PC and for audio or you can switch computer audio from headphones to speakers and back as needed.[Premium material & Size] It is entirely made of a durable, black metal, which has a great, solid feel and weight. This audio switch is and does not take up much space, which is perfect.Material: ABScolor: blackPackage Contents:1 x 3.5mm audio switch 1 x 3.5mm audio cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.