Bluetooth codecs: For reasons I cite in my blog about Bluetooth audio codecs, we didn’t mandate the inclusion of any specific Bluetooth codec—the technology that minimizes the amount of data inside of a digital audio file so it may stream reliably above a Bluetooth connection. �?The app is excellent. https://www.bluetoothspeaker.top/hot-selling-new-arrival-usb-player-waterproof-btspeaker-super-quality-wireless-speaker/