How do I switch to 24-hour mode vs. 12-hour mode?

The clock mode shown on your Luxelion app is controlled by device-wide settings for your Garmin device.

On your watch, go to:

• Settings
• System
• Clock
• Set the device to show 12-hour or 24-hour format

As of LuxeLion Data Module ℹ️D6 (which launched March 28, 2023), It’s also possible to override this setting using the settings for your watch face.