Another cheap junk with many suspicious 5 star ratings. Good luck getting an answer on guarantee. These little speakers had the potential to be big. Out of the box they sounded good, matched well, looked good and were reasonably priced. I was very satisfied with it until the first charging cycle (i.e. after about 30 hours of operation). Now the batteries aren't charging, and of course that's just outside the return window - funny how that time always seems right. The first speaker lasted about an hour, after the first charge it won't turn on and won't charge. The second speaker will turn on for a second and then immediately turn off again. There are enough people reporting spent batteries that their manufacture is likely using reduced batches of batteries with high rejection rates to keep their costs down. They then pass it on to Amazon customers, knowing they won't be held accountable. Just don't buy these speakers. And if you find a good quality waterproof speaker made in a country that really cares that their products work, please let me know.
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