I gave pair to my mom and the both leds was working<br />2 hours later the led of one of thim didn't work any more!<br />I gifted one pair also to my sister.  she had problem with one of hers that the led work sometims and some time didn't!<br />No water involved<br />I gave it 2 stars cuz the idea is amazing<br />I'll try to fix or adjust it so it won't brok again