Self Troubleshoot before proceed any further. 

Please include the test result when resorting for email support.

1.Plug in USB, it's normal that the blue indicator blinks for a few secs and doesn't stay on. 

2.Is "USB PnP Audio Device" seen by your Windows or Mac, or is recognized as unknown device?

🔔For the latest Windows users, in order to access the sound setting, please right-click the speaker icon at the bottom right-choose "Sound"-click "Sound Control Panel" at the upper right of the pop-up window. 

3.If it is recognized and level meter responds when you speak, but you still don't hear audio from PC, have you select correct output device (computer or the mic) under system and software setting?

4.If computer sees it as unknown device, have you test out on a different computer? Tried to update and reinstall the unknown driver for a few times on the same computer? 

Q:

1.The microphone is not recognized (follow the video below);

Windows: from 0:29 to 4:01. Mac: from 8:41 to 9:20

2.It is recognized but no sound heard ((follow the video below from 4:01 to 6:48).

3.No sound on my Mac (follow the video below from from 10:40 to 11:44).

4.After upgraded from to Win10, the microphone doesn't work (follow the video below from 6:49 to 7:49).

Q: Does K053 USB lapel mic work with phones?

A: Yes, it does. But you need a USB type A to type C or lightening adapter and we have confirmed that it works with: Samsung S and Note series of 7/8/9, iPhone 5-8, XS MAX, Sony Z series, Goolge Pixel 2 and Huawei Mate and P 20. If you are using model that is not listed above, as long as the released date of your phone is similar to those mentioned models, the mic should still work.

Q: Microphone doesn't work with my Skype!"

A: 1.Follow the playlist: http://bit.ly/k053problemsolving to check if K053 is working properly. 

2.For Windows user, you can go to Setting→Privacy→Microphone, and set it to allow apps to access to microphone, at lasts restart computer.

3.Update Skype to latest version or re-install the latest Skype.

Contact 

If the trouble-shooting methods above still cannot solve your problem, feel free to contact us at web@fifine.cc
Please include the order number and specify the problem in your email.