The JBL G0+ provides a frequency reaction range of 180Hz �?twenty kHz. Aside from normal music playback, the speaker includes a noise-cancelling microphone which may also be used to take handsfree calls, also. Some sort of DoS is usually feasible, even in modern devices, by sending unsolicited pairing requests https://www.bluetoothspeaker.top/factory-cheap-modern-style-transparent-speaker-tf-card-available-wireless-bluetooth-speaker/