"second" hand

source/DecimalWatchFaceView.mc

@@ -7,6 +7,8 @@ using Toybox.Time.Gregorian;
 
 class DecimalWatchFaceView extends WatchUi.WatchFace {
 
+    var isHighPowerMode = true; // Track if we're in high power mode
+
     function initialize() {
         WatchFace.initialize();
     }
@@ -50,10 +52,12 @@ class DecimalWatchFaceView extends WatchUi.WatchFace {
 
     // The user has just looked at their watch. Timers and animations may be started here.
     function onExitSleep() {
+        isHighPowerMode = true;
     }
 
     // Terminate any active timers and prepare for slow updates.
     function onEnterSleep() {
+        isHighPowerMode = false;
     }
 
     // Compute decimal time from current clock time
@@ -124,7 +128,7 @@ class DecimalWatchFaceView extends WatchUi.WatchFace {
         dc.fillCircle(centerX, centerY, 5);
     }
 
-    // Draw both hour and minute hands for current decimal time
+    // Draw hour, minute, and second hands for current decimal time
     function drawHand(dc, decimalTime) {
         var width = dc.getWidth();
         var height = dc.getHeight();
@@ -143,6 +147,17 @@ class DecimalWatchFaceView extends WatchUi.WatchFace {
         var minuteAngleRad = Math.toRadians(minuteAngle);
         var minuteHandLength = radius - 45; // Longer hand
 
+        // Calculate second hand (shows finer detail, 100 rotations per day)
+        // Only visible in high power mode
+        var secondFractionalPart = (decimalTime * 10.0) - (decimalTime * 10.0).toNumber();
+        var secondAngle = secondFractionalPart * 360.0 - 90.0;
+        var secondHandLength = radius - 35; // Longest hand
+
+        // Draw second hand first (if in high power mode), so it appears behind other hands
+        if (isHighPowerMode) {
+            drawSingleHand(dc, centerX, centerY, secondAngle, secondHandLength, 2, Graphics.COLOR_DK_GRAY);
+        }
+
         // Draw minute hand (longer, thinner)
         drawSingleHand(dc, centerX, centerY, minuteAngle, minuteHandLength, 4, Graphics.COLOR_WHITE);