3.5 mm Jack(4-pole) - 2x 3.5 mm Jack female

3.5 mm male Jack 4-pole - 2 x 3.5 mm Jack female

connect a mic and headset separately to a TRRS jack connection

TRRS audio jack
Tip is Left audio, Ring1 is Right audio, Ring2 is Ground and Sleeve is Microphone

headset (green)
microfoon (red)

length 30 cm