Click/spark sound on calls

[Six0Four]

I am using the GPS version Series 8 and I noticed this weird sound when taking a call. It's like a click or a spark sound that happens randomly every few minutes or so.

I was wondering if anyone else had this issue and found a fix. Maybe someone knows what's causing it?

Thanks.

 

[waw74]

are you using the speaker/mic on the watch?
are you using bluetooth headphone? what kind?

 

[Six0Four]

are you using the speaker/mic on the watch?
are you using bluetooth headphone? what kind?

Yes using the speaker/mic.