Add warnings

lib/I18n/translations/english.yaml

@@ -84,6 +84,7 @@ STR_TIME_TO_SLEEP: "Time to Sleep"
 STR_SHOW_HIDDEN_FILES: "Show Hidden Files"
 STR_USE_CLOCK: "Use Clock"
 STR_CLOCK_SETTINGS: "Clock Settings"
+STR_CLOCK_SETTINGS_WARNING: "Uses more battery; clock may drift"
 STR_CLOCK: "Clock"
 STR_CLOCK_FORMAT: "Clock Format"
 STR_TIMEZONE: "Timezone"

src/activities/settings/ClockSettingsActivity.cpp

@@ -85,8 +85,10 @@ void ClockSettingsActivity::render(RenderLock&&) {
   const auto pageHeight = renderer.getScreenHeight();
 
   GUI.drawHeader(renderer, Rect{0, metrics.topPadding, pageWidth, metrics.headerHeight}, tr(STR_CLOCK_SETTINGS));
+  GUI.drawSubHeader(renderer, Rect{0, metrics.topPadding + metrics.headerHeight, pageWidth, metrics.tabBarHeight},
+                    tr(STR_CLOCK_SETTINGS_WARNING));
 
-  const int contentTop = metrics.topPadding + metrics.headerHeight + metrics.verticalSpacing;
+  const int contentTop = metrics.topPadding + metrics.headerHeight + metrics.tabBarHeight + metrics.verticalSpacing;
   const int contentHeight = pageHeight - contentTop - metrics.buttonHintsHeight - metrics.verticalSpacing * 2;
 
   GUI.drawList(