Switch type: Silver-plated suction switch, the internal resistance of suction closure is less than 1 ohm. Switch working mode: high-speed vertical suction switch [high-speed vertical suction switch can effectively prevent the popping sound that may be generated during switching compared to push-pull switch]. 2-input and 1-output fully compatible with non-common ground design, no noise be generated due to ground wire problems. Supported devices: fully compatible with computers, mobile phones, tablets, projection for consoles, TV boxes, all audio devices can be used Note: This product can also be used as 1-input and 2-output, such as connecting headphones and speakers to a computer at the same time, and then use this to switch, (the main function of this product is 2-input and 1-output, 1-input and 2-output are used in reverse, although 1-input and 2-output can also be used, but when switching to the headphone state, the speaker may have some noise, and the speaker volume adjustment knob needs to be turned down to make the noise disappear) Color: Black Material: Aluminum Alloy Package Contents: 1 x Audio switcher Only 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.