MillSO headphone mic splitter splits your 3.5mm 4-pole TRRS combo jack into two distinct ports - a TRS 3.5mm headphone jack and a TRS 3.5mm microphone jack, you can use a dual-plug gaming headset on a PC, laptop, smartphone, PS4, Xbox one, etc. NOTE: NOT for 2 sets of headphones. The 3.5mm headset adapter supports listening to music, playing games, voice chatting, etc, and you can easily identify mic and audio functions with intuitive markings. NOTE: If you want to use an external microphone, please ensure its plug is a 3-pole TRS standard, otherwise the mic function will be disabled. Mic headphone splitter is made of soft and durable TPE material for maximum flexibility and withstands a variety of everyday connection needs and long-term use. The module moving design lets you adjust the cable's length easily. The oxygen-free copper core provides maximum conductivity and durability for the 3.5mm splitter, and 24K gold-plated connectors and robust metal housing [exclusive sapphire blue series] ensure optimum sound quality. Plug and Play: Mic headphone splitter is easy to use, with 10000+ plugs and unplugs tests, it is designed to meet your everyday connection needs and ensure long-term use. If you encounter any quality trouble or compatibility issues, please let us know. MillSO headphone mic splitter adapter splits your 3.5mm 4-pole TRRS combo jack into two distinct ports - a TRS 3.5mm headphone jack and a TRS 3.5mm microphone jack, and you can easily identify mic and audio ports with intuitive markings. Perfect for connecting any 3.5mm dual plug gaming headset to a PC, laptop or smartphone with only one 3.5mm combo jack.