After a year of service, the bluetooth component ceased connecting properly, and they solidified into stone. When the clock is off, it lights up, and vice versa when it's on. But I still went ahead and purchased them new ones because nothing else comes close to competing with it in terms of price and functionality. Because I used them in the shower every day for an entire year, I don't think it's necessary to worry too much about their resistance to water or to the effects of drops.
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