For those who have the opportunity to work in music, this adapter is ideal. If your music is on your computer, connect the two plugs in the microphone input and headphone output of the machine, and the 4-pin connector plug your mic + usual headset from your smartphone. If your music is rather in your smartphone, simply during a call Sk * pe or other unplug your headset from your smartphone and connect the 4-pin connector. No need to change helmet!
And it is also useful at home for the same reasons.
The reverse is also cable (Hama Lindy or StarTech eg Lindy 35509 headphone adapter cable for Mobile Phone / Laptop.), So in all cases you can use your favorite headphones;)
