【Bidirectional 3.5mm Audio Switch】Plug and play, no power supply required. 1X2 (one input to two outputs) or 2X1 (two inputs to one output) 3.5mm interface audio selector designed for easy switching between multiple audio receiving devices (speakers, headphones, etc.) or audio sources (mobile phones, computers, etc). | 【Metal Casing, Small And Exquisite.】Small and compact, beautifully crafted with a metal CNC casing. The size is only 33mm/1.3in x 28mm/1.1in x 13mm/0.5in, which does not take up much space, making it perfect for use on desktops and in offices. | 【Low Impedance，Hi-Fi quality】This audio switcher boasts a low-impedance design that delivers high-fidelity audio reproduction while minimizing cable noise. The device also features a high-quality headphone jack with gold-plated contacts for reliable performance. | 【One-Press Switch ，Easy To Use】By pressing the selection button, you can switch between two playback devices (1X2 mode) or switch between two audio sources (2X1 mode) without the need to frequently plug and unplug cables. | 【Wide Compatibility, Comes With Cable.】Audio Sources: computers, laptops, mobile phones, audio players, game consoles, and more. Playback Devices: headphones, speakers, audio amplifiers, and more. Suitable for all 3.5mm audio interfaces, whether three or four-pole (does not support microphone function). Product comes with a 1-meter-long audio cable.