Bluetooth codecs: We don’t award extra points for inclusion of additional Bluetooth codecs beyond the standard SBC codec found in all Bluetooth devices. The sonic differences between these codecs are insignificant close to the very easily heard differences among the speakers by themselves. Carry Documentation: Carry the documentation for https://www.bluetoothspeaker.top/soundbox-subwoofer-wireless-roundness-column-aluminum-alloy-bluetooth-speaker/