“Sleep Mode” can be enabled manually after turning off “Auto Sleep” in the app. Click the “Profile” option from the menu options section. Open the “Watch Settings” and then tap the “Auto Sleep”. Then, tap on toggle button to disable “Auto Sleep.” The app will then auto-sync with your HeartGuide™. Press the [START/STOP] button on your HeartGuide™ until the “Sleep Mode” symbol appears.  

 

“Auto Sleep” cannot be turned off on the watch if it is already in auto sleep mode (i.e. if the watch is within the auto sleep time range previously set).