I’ve ordered this in April, when it was still cold in most parts of Canada, and it held up well so far. I’ve been keeping it outside in freezing temps, and the battery still lasts for at least a week on a charge, if not more. During the summer I only had to charge it once a month or so with a daily ~30 minutes of use (riding with kids to and fro daycare). I have it stashed in the Chariot, and occasionally forgot to close the tarp on it, leaving it out in the rain; still works well. It also had a bunch of squirrels go nuts at it, thinking it’s some sort of snack box, but it held up well against them. Overall, if this would die on me in the next year or so, I’d still probably buy another.
The sound quality is adequate. Sure, it can pump out loud music and it has some bass, but of course it will be nothing compared to a good car stereo or a hifi audio setup. Let’s just place it somewhere between a built-in TV speaker and a mid-range, OOTB home audio setup. Which is good enough for an outdoor or kids party.