Sony WH-XM4 does not show up in bluetooth battery status menu despite MacOS displaying it.

[busti]

I have a Sony WH-XM4 headset which I use on my Macbook Pro M1. I would like to add it's battery status to the menubar, which I can check in the bluetooth preferences. However, it is not listed in the menu for that item.
Other bluetooth devices, i.e. my airpods or my keyboard are working fine.

If there is any further information I can supply please let me know.

[exelban]

Hi. Could you please provide the output of /usr/sbin/system_profiler SPBluetoothDataType?

[busti]

Sure:

Bluetooth:

      Bluetooth Controller:
          Address: F4:D4:88:86:74:12
          State: On
          Chipset: BCM_4387
          Discoverable: Off
          Firmware Version: 19.6.451.5119
          Product ID: 0x0001
          Supported services: 0x382039 < HFP AVRCP A2DP HID Braille AACP GATT Serial >
          Transport: PCIe
          Vendor ID: 0x004C (Apple)
      Not Connected:
          Air75 BT5.0 :
              Address: CE:35:8D:A4:BE:FB
              Minor Type: Keyboard
          AirPods Pro:
              Address: 2C:76:00:B7:67:4D
              Vendor ID: 0x004C
              Product ID: 0x2014
              Firmware Version: 5B58
              Minor Type: Headphones
              Serial Number: J3KF14R7F5
          Arc Touch Mouse SE:
              Address: F8:BD:DB:93:CA:AF
              Minor Type: Mouse
          WH-1000XM4:
              Address: 94:DB:56:8E:0E:C8
              Vendor ID: 0x054C
              Product ID: 0x0D58
              Firmware Version: 2.5.0
              Minor Type: Headset

[exelban]

Were the headphones connected when you running that command?

[busti]

I apologize. Here is it again with them connected:
Bluetooth:

  Bluetooth Controller:
      Address: F4:D4:88:86:74:12
      State: On
      Chipset: BCM_4387
      Discoverable: Off
      Firmware Version: 19.6.451.5119
      Product ID: 0x0001
      Supported services: 0x382039 < HFP AVRCP A2DP HID Braille AACP GATT Serial >
      Transport: PCIe
      Vendor ID: 0x004C (Apple)
  Connected:
      WH-1000XM4:
          Address: 94:DB:56:8E:0E:C8
          Vendor ID: 0x054C
          Product ID: 0x0D58
          Battery Level: 100 %
          Firmware Version: 2.5.0
          Minor Type: Headset
          Services: 0x800019 < HFP AVRCP A2DP ACL >
  Not Connected:
      Air75 BT5.0 :
          Address: CE:35:8D:A4:BE:FB
          Minor Type: Keyboard
      AirPods Pro:
          Address: 2C:76:00:B7:67:4D
          Vendor ID: 0x004C
          Product ID: 0x2014
          Firmware Version: 5B58
          Minor Type: Headphones
          Serial Number: J3KF14R7F5
      Arc Touch Mouse SE:
          Address: F8:BD:DB:93:CA:AF
          Minor Type: Mouse

[busti]

And after using them for a while:

Bluetooth:

      Bluetooth Controller:
          Address: F4:D4:88:86:74:12
          State: On
          Chipset: BCM_4387
          Discoverable: Off
          Firmware Version: 19.6.451.5119
          Product ID: 0x0001
          Supported services: 0x382039 < HFP AVRCP A2DP HID Braille AACP GATT Serial >
          Transport: PCIe
          Vendor ID: 0x004C (Apple)
      Connected:
          WH-1000XM4:
              Address: 94:DB:56:8E:0E:C8
              Vendor ID: 0x054C
              Product ID: 0x0D58
              Firmware Version: 2.5.0
              Minor Type: Headset
              Services: 0x800019 < HFP AVRCP A2DP ACL >
      Not Connected:
          Air75 BT5.0 :
              Address: CE:35:8D:A4:BE:FB
              Minor Type: Keyboard
          AirPods Pro:
              Address: 2C:76:00:B7:67:4D
              Vendor ID: 0x004C
              Product ID: 0x2014
              Firmware Version: 5B58
              Minor Type: Headphones
              Serial Number: J3KF14R7F5
          Arc Touch Mouse SE:
              Address: F8:BD:DB:93:CA:AF
              Minor Type: Mouse

System dialogue now shows 90%:

[busti]

After searching around for a bit I came across this stackoverflow post: https://apple.stackexchange.com/questions/215256/check-the-battery-level-of-connected-bluetooth-headphones-from-the-command-line

However, I was not able to extract any meaningful data from ioreg using any of the commands in the above post, or manually by scouring through the output of ioreg -l using a text editor.

The battery percentage shown by the system has since gone down by another 10% as if to taunt me: