Very disappointed

I purchased these a few months back for listening to music while I cycle indoors, replacing a pair of bluetooth wireless earbuds from Soundpeats that lasted 18 months before they finally died. Unfortunately that model is no longer made so I tired the Oontz. They worked for about 20 minutes the first time I used them, despite being fully charged. I charged them again, and the same result - the battery lasted about 20 minutes. Now they won't hold a charge at all and the battery indicator will not turn on while charging.

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