[4 Port 3.5mm Audio Switch] 4(1)-IN-1(4)-OUT 3.5mm Audio selector Designed for Customers Having Several Audio Sources and Outputs. (Note: NOT a Splitter, Only One Input Can Be Played at a Time.)[Easy to Operate] 4 to 1: Audio Sources (like CD Player/ Computer/ Phone) to 1/4 Ports and 1 Audio Output (like Speakers) to IN/OUT Port. 1 to 4: Connect 1 Audio Source to IN/OUT Port and 4 Audio Outputs to 1/4 Port.[With Audio Selector] You Can Select Audio Input Sources and Audio Output Devices by Selector(/C/D). Volume Control on the Switcher Easy to Use.[Long Distance Transmission] Use Standard Audio Cable, Input and Output Transmission Distance up to 8 Meters. Plug and Play, No Need Supply.[Wide Compatibility] Input Interface Is Compatible with PC, Phone, Laptop, Blue-ray Players and More. Output: Speaker, Headphones, Sound Bar and More Devices. (Only for Three-segment Headphones, NOT for Four-segment Headphones)input and output Analog signal: maximum support 2V p-pInput and output frequency range: 20Hz 20KHzSuper small size; Compact and super mini size; Easy to place and suitable for your desktop and office.colour: blackMaterial: ABSSize: 7.8x5.6x2.4cmPackage Contents:1 x Stereo Audio SwitcherOnly 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.