If your own voice sounds in your headphones like you just joined a sci-fi space station, first test whether the same issue appears in a normal phone call, Teams, or another app. This helps locate whether the problem is in the headphones or somewhere else.
Then charge the battery fully and re-pair the headphones with your phone - often that is like a magic trick that brings the sound back to normal. If the problem continues, send us a message at info@valco.fi and we will figure out how to tame the robot voice.