QuietControl 30 wireless headphones can be charged using the USB cable supplied in the box by plugging the micro-USB into the neckband and the USB into the USB port on a computer or a wall charger (sold separately). Allow up to three hours for the headphones to fully charge. (If the battery is depleted, a quick 15-minute charge provides approximately one hour of play time.) While charging, the power status indicator will flash amber. Once fully charged, the power status indicator light will turn solid green.