$ (cat *.log; zcat *.gz)|grep bluetooth -i|sort|less
Result:
...
2016-12-22 20:50:48.556151+0900 0x263 Default 0x0 87 blued: (IOBluetooth) [com.apple.bluetooth.bluetoothaudiod] Connect to audio device
2016-12-22 20:50:48.557822+0900 0x263 Default 0x0 87 blued: (IOBluetooth) [com.apple.bluetooth.bluetoothaudiod] Connection complete (null) e00002bc
2016-12-22 21:01:00.483709+0900 0xb6c7 Error 0x0 113 AirPlayXPCHelper: (BluetoothAudio) [com.apple.bluetooth.BTFigE] 08-3d-88-1a-6e-40 has no service mask
2016-12-22 21:01:01.013782+0900 0xb4af Activity 0x8000000000005c2c 2205 Bluetooth File Exchange: (CoreFoundation) Loading Preferences From User CFPrefsD For Search List
2016-12-22 21:01:04.927002+0900 0x248 Default 0x0 102 blued: (IOBluetooth) [com.apple.bluetooth.ScanManager] ***** Starting after temporarily stopping all scans *****
...
Flag: 08-3D-88-1A-6E-40