Features 1.3.5mm Stereo Switcher: Bidirectional switching splitter sharing active speakers and headphones. 2.Method 1: Connect 2 audios to (IN/OUT)1 and (IN/OUT)2 use the 1/2 switch to get an output. 3.Method 2: Connect 1 to IN/OUT select an output between (IN/OUT)1 and (IN/OUT)2. (Output can be switched between speakers and headphones). 4.One Key Mute Button: One key mute convenient and fast very practical in special situations. 5.Simple Operation: Plug and play; No External Power Required; Won't affect the sound quality at all. Specification Item Type: 3.5mm SwitcherMaterial: Aluminum AlloySize: Approx. 7.8x5x2cm / 3x2x0.8inColour: BlackFrequency Range: 20Hz-20KHzzParameter: Two way switching splitter sharing active speakers and headphones (cannot be output at the same time) the analog signal supports up to 2V p-p input and outputOne key mute convenient and fast very practical in special scenes Package List 1 x3.5mmSwitcher1 x Cable1 x Manual