It seemed to work fine for about a day, but since I made a call using only the left one, the right one stopped working... Even when I put it in the charger, it doesn't work.

First of all, it's awkward because it's too big. It is very different from the picture. It's not bone conduction, it's just the feeling of being close to the speaker. It's ambiguous to recommend.

The sound of the drama is loud, but the music is good and the sound of the call is too low