Light weight and compact, easy to take along
with you. Specifically for headphone and your separate microphone to be combined into one 3.5mm 4 conductor TRRS
jack say on your iPhone or other portable audio gear. For example this will overcome the limitation of some laptop audio ports, by turning a single
4-position 3.5mm audio port into two distinct 3-position 3.5mm audio ports.
This will allow you to connect a microphone as well as external speakers or/and
a stereo headphone. Makes use of older audio accessories with newer computers!
Can be used with any portable device that uses a 4 position TRRS 3.5mm jack. The "TRRS" stands for Tip, Ring, Ring, Sleeve.