Microphone not detected

Registration date
Sunday April 30, 2017
Last seen
April 30, 2017
Good morning/evening,

To make it short, I bought months ago a headphone ( GXT 10 Trust ) . The sound is working very well, I can hear, but the problem is with the Microphone. It's not detected, or detected but it doesn't work (I don't know the real problem.)

This is a screenshot showing 2 different Microphones.

The first appearing with the a green color in his lower, is the actual mic of my laptop, it isn't the microphone that I want to record with.
The second microphone I don't know what is it (I think that's the Microphone of my headphone.) But there's no way to Activate it.

Only the option "Disable" is possible :(

Please I need your help. Thanks for your time.