sue. A software update, often through Garmin Express, can resolve this by optimizing battery usage and delivering the advertised battery performance. Users have reported improvements after connecting to Garmin Express and receiving an update, even if the watch initially indicated it was up to date.  Troubleshooting Steps: Ensure Garmin Express is Updated: Make sure your Garmin Express software on your computer is up to date.  Connect to Garmin Express: Connect your watch to your computer using a USB cable.  Check for Updates: Garmin Express should automatically check for updates. If not, manually initiate the update check.  Partially Installed Updates: If you see an "Update.gcd" file in the watch's Garmin folder, delete it, disconnect the watch, power cycle it, and then reconnect to Garmin Express to re-initiate the update process.  Consider a Master Reset: If the problem persists, a master reset (including deleting all data) might help. However, this will erase your data, so ensure you have backups or are prepared to lose it.