The JBL G0+ features a frequency reaction range of 180Hz �?20 kHz. Apart from normal music playback, the speaker contains a noise-cancelling microphone which will also be used to take handsfree calls, too. Some type of DoS is likewise doable, even in modern devices, by sending unsolicited pairing requests https://www.bluetoothspeaker.top/music-waterproof-stereo-bluetooth-radio-powered-wireless-gaming-bluetooths-speakers/