Now when I use it the connection will drop sporadically, however the lights remain on constantly. But in my desperation for a shoe rack I managed to put it together. That one spent half its day recharging. So these just like my previous order one of the sandals is larger than the other. With noise cancellation on, there was a moderately loud hiss. Hey! They are easy to clean even the glittery bit. One of the things he loves best about these sandals is that they have deep heel cups, which help him with his posture. "These new Ecotreads (same size as old ones) are way too loose in the straps, and its too hard to keep the flip-flops on when walking. The shape of my ears make it difficult to hear clearly with AirPods.