Qual modelo é o chip bluetooth no adaptador bluetooth?

Existem muitos modelos de bluetooth produzidos pela realtek como rtl8725,rtl8761,rtl8821.Eu tenho um adaptador usb azul, eu quero saber qual é o modelo do chip bluetooth no adaptador bluetooth?

sudo  dmesg | grep -i tooth
[    2.778424] usb 2-10: Product: Bluetooth Radio
[   10.918815] Bluetooth: Core ver 2.22
[   10.918832] Bluetooth: HCI device and connection manager initialized
[   10.918834] Bluetooth: HCI socket layer initialized
[   10.918836] Bluetooth: L2CAP socket layer initialized
[   10.918840] Bluetooth: SCO socket layer initialized
[   11.298374] rtk_btusb: Realtek Bluetooth USB driver ver 3.1.244af65.20200812-195650
[   19.222345] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   19.222346] Bluetooth: BNEP filters: protocol multicast
[   19.222350] Bluetooth: BNEP socket layer initialized
[   55.326843] Bluetooth: RFCOMM TTY layer initialized
[   55.326846] Bluetooth: RFCOMM socket layer initialized
[   55.326850] Bluetooth: RFCOMM ver 1.11

Eu coleto alguns modelos de bluetooth realtek da web:

rtl8723b_fw
rtl8723d_fw
rtl8723fs_fw
rtl8725as_fw
rtl8761a_fw
rtl8761at8192ee_fw
rtl8761b_fw
rtl8821a_fw
rtl8821c_fw
rtl8822b_fw
rtl8822cs_fw

Mostrar meu dispositivo usb:

lsusb 
Bus 003 Device 002: ID 8087:8000 Intel Corp. 
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:8008 Intel Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 004: ID 17ef:6019 Lenovo 
Bus 002 Device 006: ID 0d28:0204 NXP ARM mbed
Bus 002 Device 003: ID 2bdf:0284  
Bus 002 Device 005: ID 0bda:8771 Realtek Semiconductor Corp. 
Bus 002 Device 002: ID 046d:c31c Logitech, Inc. Keyboard K120
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Nenhum modelo número 8771 no chip bluetooth da realtek.
Como obter exatamente qual modelo é.