“I've bought jam ultra yesterday, and the case is blinking red when charging, same for the earbuds, and they don't seem to have power, help?”
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Yes, they do light up red even when the case is not plugged in, because it can charge the ear buds several times before charging the unit case again. The holding case can also charge a phone if you hook it up to the USB port for one charge prior to recharging the case-battery.
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