Extra-long Length: The 3 feet cable is long enough for you to move freely, and comfortably plug into the computer or other 3.5mm devices in front of you. If you meet any usage or compatibility problems, feel free to contact us. We are more than happy to solve any problem for you!. MillSO 3.5mm audio splitter is equipped with premium metal housing and 24K gold plated connector that can resist corrosion and ensure optimum sound quality. Allow you to connect the headphone and the external 4 pole TRRS microphone (not 3 pole TRS microphone) to Laptop, Tablet, PC computer, or Smartphone with a 4 pole 3.5mm combo jack. It can be used to split the audio output into two separate sets of headphones or speakers. The best solution to share cool music, movies, and games with your families and friends. MillSO headsets splitter is 4-Pole TRRS 3.5mm audio headset port to two TRRS female 3.5mm stereo port both with Mic and Audio Function. You can use it to connect two TRRS headsets or mics to one laptop, smartphone, Xbox... (When using the mic function, the plugs of microphone and headphone must both be 4-pole TRRS, and DON'T compatible for IOS standard headphones).