[2 Port 3.5mm Audio Switch] Connect two audio devices to (IN/OUT) 1 and (IN/OUT) 2, then use the 1/2 switch to select one output. Alternatively, connect one audio source to IN/OUT and choose between outputting to (IN/OUT) 1 or (IN/OUT) 2. The output can be switched between speakers and headphones. [No External Power Required] Plug and play design requires no external power supply, allowing you to listen to music without affecting sound quality. Note: Only one audio source is output at a time; you can switch between two audio sources. [One-Key Mute Button] The audio selector features a one-key mute function that allows you to quickly stop audio playback. This mute button is convenient and useful for temporarily silencing sound. [Widely Compatible] The audio selector works with most 3.5mm audio devices, including mobile phones, headphones, PCs, MP3/MP4 players, and game consoles. Easily switch between PC and other audio sources, or toggle computer audio between headphones and speakers as needed. [Premium Material & Size] Constructed entirely of durable black metal, this audio switch has a solid, high-quality feel and compact design that saves space. Material: ABS. Color: Black. Package Contents: 1 x 3.5mm Audio Switch, 1 x 3.5mm Audio Cable. Only the items listed are included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.