Mobile Phone Audio Splitter Cable with one 3.5mm Male (TRRS) and Two 3.5mm (TRS) Female connectors, one for External 3.5mm Speaker and one for External 3.5mm Microphone by ZaxSound
(as of Nov 27,2021 14:30:07 UTC – Details)
This is a TRRS (Tip-Ring-Ring-Sleeve) Audio Cable Adapter. Its main function is to split the TRRS jack into one separate TRS 3.5mm headphone and one TRS 3.5mm Microphone.
TRRS jack is always found in phones that are (CTIA/AHJ) compliant, almost all smart phones nowadays (and after 2010) are compliant. Use the cable with your phone to enable external Microphone and external speakers.
TRRS jack is also found in some new laptops that has Combo-Jack (headphone and microphone icon), use this cable to split the combo jack into 2 ports, one will be TRS 3.5mm headphone jack and one will be TRS 3.5mm microphone port.
This adapter is not a headphone splitter/Y-cable. It cannot be used to split the audio output to two separate sets of headphones or speakers.