The Sony Smartwatch 3 (SWR50) and LG Watch Urbane 2nd edition were of the very few smartwatches able to read the Libre sensor with their internal NFC reader, and gave birth to early projects as a bridge. This is now an archived project, some guidelines are still available here.
Most required resources are not available anymore on the web.
xDrip+ supports this feature with the data source LibreAlarm.
Patch the SWR50 watch to enable the NFC reader⌁
Install LibreAlarm on your phone⌁
Install the LibreAlarm watchface on the SWR50⌁
Use these guidelines for LibreAlarm instead of xDrip+.
Setup xDrip+ with LibreAlarm data source.⌁
xDrip+ will receive BG readings from the LibreAlarm app.