Bluetooth codecs: For reasons I cite in my web site about Bluetooth audio codecs, we didn’t mandate the inclusion of any specific Bluetooth codec—the technology that cuts down the amount of data inside a digital audio file so it might stream reliably more than a Bluetooth connection. We use https://www.bluetoothspeaker.top/wireless-bluetooth-speaker-outdoor-plug-in-card-dual-speaker-subwoofer-home-radio/