diff --git a/app/src/main/java/com/github/frimtec/android/pikettassist/ui/alerts/AlertArrayAdapter.java b/app/src/main/java/com/github/frimtec/android/pikettassist/ui/alerts/AlertArrayAdapter.java
index 89a84235..39963a55 100644
--- a/app/src/main/java/com/github/frimtec/android/pikettassist/ui/alerts/AlertArrayAdapter.java
+++ b/app/src/main/java/com/github/frimtec/android/pikettassist/ui/alerts/AlertArrayAdapter.java
@@ -5,6 +5,7 @@
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ArrayAdapter;
+import android.widget.ImageView;
 import android.widget.TextView;
 
 import androidx.annotation.NonNull;
@@ -30,6 +31,8 @@ public View getView(int position, @Nullable View convertView, @NonNull ViewGroup
     if (convertView == null) {
       convertView = LayoutInflater.from(getContext()).inflate(R.layout.alert_log_item, parent, false);
     }
+    ImageView playIcon = convertView.findViewById(R.id.alert_log_item_image_play);
+    playIcon.setVisibility(alert.isClosed() ? View.INVISIBLE : View.VISIBLE);
     TextView timeWindow = convertView.findViewById(R.id.alert_log_item_time_window);
     TextView durations = convertView.findViewById(R.id.alert_log_item_durations);
     timeWindow.setText(AlertViewHelper.getTimeWindow(alert));
diff --git a/app/src/main/java/com/github/frimtec/android/pikettassist/ui/alerts/AlertDetailActivity.java b/app/src/main/java/com/github/frimtec/android/pikettassist/ui/alerts/AlertDetailActivity.java
index 5efce86b..7fb22feb 100644
--- a/app/src/main/java/com/github/frimtec/android/pikettassist/ui/alerts/AlertDetailActivity.java
+++ b/app/src/main/java/com/github/frimtec/android/pikettassist/ui/alerts/AlertDetailActivity.java
@@ -4,6 +4,7 @@
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.ArrayAdapter;
+import android.widget.ImageView;
 import android.widget.ListView;
 import android.widget.TextView;
 
@@ -41,6 +42,10 @@ protected void onCreate(Bundle savedInstanceState) {
       ArrayAdapter<AlertCall> adapter = new AlertCallArrayAdapter(this, alert.getCalls());
 
       View headerView = getLayoutInflater().inflate(R.layout.activity_alert_detail_header, listView, false);
+
+      ImageView playIcon = headerView.findViewById(R.id.alert_detail_header_image_play);
+      playIcon.setVisibility(alert.isClosed() ? View.INVISIBLE : View.VISIBLE);
+
       TextView timeWindow = headerView.findViewById(R.id.alert_detail_header_time_window);
       TextView currentState = headerView.findViewById(R.id.alert_detail_header_current_state);
       TextView durations = headerView.findViewById(R.id.alert_detail_header_durations);
diff --git a/app/src/main/java/com/github/frimtec/android/pikettassist/ui/alerts/AlertViewHelper.java b/app/src/main/java/com/github/frimtec/android/pikettassist/ui/alerts/AlertViewHelper.java
index 9f76f453..bd505eeb 100644
--- a/app/src/main/java/com/github/frimtec/android/pikettassist/ui/alerts/AlertViewHelper.java
+++ b/app/src/main/java/com/github/frimtec/android/pikettassist/ui/alerts/AlertViewHelper.java
@@ -38,11 +38,8 @@ static String getDurations(Context context, Alert alert) {
       Duration confirmDuration = alert.getConfirmTime() != null ? Duration.between(alert.getStartTime(), alert.getConfirmTime()) : Duration.ofSeconds(0);
       confirmText = String.format(context.getString(R.string.alert_view_confirm_time), confirmDuration.getSeconds());
     }
-    String durationText = "";
-    if (alert.isClosed()) {
-      Duration duration = Duration.between(alert.getStartTime(), alert.getEndTime());
-      durationText = String.format(context.getString(R.string.alert_view_duration), duration.getSeconds() / 60d);
-    }
+    Duration duration = Duration.between(alert.getStartTime(), alert.isClosed() ? alert.getEndTime() : Instant.now());
+    String durationText = String.format(context.getString(R.string.alert_view_duration), duration.getSeconds() / 60d);
     return Stream.of(confirmText, durationText).filter(((Predicate<String>) String::isEmpty).negate()).collect(Collectors.joining("\n"));
   }
 
diff --git a/app/src/main/res/drawable/ic_event.xml b/app/src/main/res/drawable/ic_event.xml
index cfeb149c..a179fe22 100644
--- a/app/src/main/res/drawable/ic_event.xml
+++ b/app/src/main/res/drawable/ic_event.xml
@@ -4,15 +4,15 @@
     android:viewportWidth="612"
     android:viewportHeight="612">
     <path
-        android:fillColor="#FF888888"
+        android:fillColor="#FF000000"
         android:pathData="M233.667,58.286l-0.146,29.143l143.004,0l0.175,-29.143z" />
     <path
-        android:fillColor="#FF888888"
+        android:fillColor="#FF000000"
         android:pathData="M466.286,87.458V29.114C466.286,13.027 453.2,0 437.143,0C421.056,0 408,13.027 408,29.114v58.344c0,16.087 13.085,29.114 29.143,29.114C453.229,116.571 466.286,103.544 466.286,87.458z" />
     <path
-        android:fillColor="#FF888888"
+        android:fillColor="#FF000000"
         android:pathData="M182.143,116.571c12.065,0 21.857,-9.733 21.857,-21.915V21.916C204,9.821 194.237,0 182.143,0h-14.572c-12.065,0 -21.857,9.734 -21.857,21.916v72.711c0,12.124 9.763,21.944 21.857,21.944H182.143z" />
     <path
-        android:fillColor="#FF888888"
+        android:fillColor="#FF000000"
         android:pathData="M115.697,87.429l0.146,-29.143H18.331C8.189,58.286 0,66.766 0,77.199v515.916C0,603.549 8.189,612 18.302,612h575.367c10.142,0 18.331,-8.48 18.331,-18.885V77.199c0,-10.462 -8.219,-18.914 -18.331,-18.914h-98.036l-0.146,29.143h87.37v145.714H29.143V87.429H115.697zM116.571,582.857H41.674c-6.936,0 -12.531,-4.867 -12.531,-10.899v-76.529h87.428V582.857zM116.571,466.286H29.143v-87.429h87.428V466.286zM495.429,262.286h87.429v87.428h-87.429V262.286zM495.429,378.857h87.429v87.429h-87.429V378.857zM495.429,495.429h87.429v76.529c0,6.003 -5.625,10.899 -12.531,10.899h-74.897V495.429zM378.857,262.286h87.429v87.428h-87.429V262.286zM378.857,378.857h87.429v87.429h-87.429V378.857zM378.857,495.429h87.429v87.429h-87.429V495.429zM262.286,262.286h87.428v87.428h-87.428V262.286zM262.286,495.429h87.428v87.429h-87.428V495.429zM145.714,262.286h87.429v87.428h-87.429V262.286zM145.714,378.857h87.429v87.429h-87.429V378.857zM145.714,495.429h87.429v87.429h-87.429V495.429zM116.571,262.286v87.428H29.143v-87.428H116.571z" />
 </vector>
diff --git a/app/src/main/res/drawable/ic_play_arrow_24dp.xml b/app/src/main/res/drawable/ic_play_arrow_24dp.xml
index a24a5fc2..230f7cb9 100644
--- a/app/src/main/res/drawable/ic_play_arrow_24dp.xml
+++ b/app/src/main/res/drawable/ic_play_arrow_24dp.xml
@@ -1,5 +1,5 @@
-<vector android:height="24dp" android:tint="@color/colorPrimary"
+<vector android:height="24dp"
     android:viewportHeight="24.0" android:viewportWidth="24.0"
     android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
-    <path android:fillColor="#FF000000" android:pathData="M8,5v14l11,-7z"/>
+    <path android:strokeColor="@color/black" android:strokeWidth="0.5" android:fillAlpha="0.9" android:fillColor="@color/colorPrimary" android:pathData="M8,5v14l11,-7z"/>
 </vector>
diff --git a/app/src/main/res/layout/activity_alert_detail_header.xml b/app/src/main/res/layout/activity_alert_detail_header.xml
index edb27d9e..e419c2d5 100644
--- a/app/src/main/res/layout/activity_alert_detail_header.xml
+++ b/app/src/main/res/layout/activity_alert_detail_header.xml
@@ -17,6 +17,16 @@
         android:layout_marginRight="5dp"
         android:layout_marginBottom="5dp"
         app:srcCompat="@drawable/ic_siren" />
+    <ImageView
+        android:id="@+id/alert_detail_header_image_play"
+        android:layout_width="70dp"
+        android:layout_height="70dp"
+        android:layout_alignParentStart="true"
+        android:layout_centerHorizontal="true"
+        android:layout_marginLeft="5dp"
+        android:layout_marginTop="5dp"
+        android:layout_marginRight="5dp"
+        app:srcCompat="@drawable/ic_play_arrow_24dp" />
 
     <TableLayout
         android:layout_width="wrap_content"
diff --git a/app/src/main/res/layout/alert_log_item.xml b/app/src/main/res/layout/alert_log_item.xml
index 299c6cca..5f427e31 100644
--- a/app/src/main/res/layout/alert_log_item.xml
+++ b/app/src/main/res/layout/alert_log_item.xml
@@ -17,6 +17,16 @@
         android:layout_marginRight="5dp"
         android:layout_marginBottom="5dp"
         app:srcCompat="@drawable/ic_siren" />
+    <ImageView
+        android:id="@+id/alert_log_item_image_play"
+        android:layout_width="50dp"
+        android:layout_height="50dp"
+        android:layout_alignParentStart="true"
+        android:layout_centerHorizontal="true"
+        android:layout_marginLeft="5dp"
+        android:layout_marginTop="10dp"
+        android:layout_marginRight="5dp"
+        app:srcCompat="@drawable/ic_play_arrow_24dp" />
 
     <TextView
         android:id="@+id/alert_log_item_time_window"