[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 (IN/OUT)1 and (IN/OUT)2 for output. 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 enjoy audio without affecting sound quality. Note: Only one audio source is output at a time; you can switch between the two inputs. [One-Key Mute Button] The audio selector features a one-touch mute button that allows quick interruption of playback. This mute function is convenient for temporarily silencing audio output. [Wide Compatibility] Supports most 3.5mm audio devices such as smartphones, headphones, PCs, MP3/MP4 players, and game consoles. Easily switch audio between devices, such as switching computer audio from headphones to speakers and back as needed. [Premium Material & Compact Size] Constructed entirely of durable black metal with a solid, high-quality feel. The compact design saves space and is ideal for desktop or portable use. Material: ABS. Color: Black. Package Contents: 1 x 3.5mm Audio Switch, 1 x 3.5mm Audio Cable. Only the listed items are included; other products are not part of the package. Note: Lighting and display differences may cause slight color variations between the image and the actual product. Measurement may vary by +/- 1-3cm.