diff --git a/src/main/java/de/ph87/electro/CONFIG.java b/src/main/java/de/ph87/electro/CONFIG.java
index a009bb4..58533de 100644
--- a/src/main/java/de/ph87/electro/CONFIG.java
+++ b/src/main/java/de/ph87/electro/CONFIG.java
@@ -6,6 +6,8 @@ import static java.lang.Math.round;
 
 public class CONFIG {
 
+  public static boolean SHOW_DETAILS = false;
+
   public static final double VOLTAGE_HIGH_MIN = 0.1;
 
   public static final int RASTER = 200;
diff --git a/src/main/java/de/ph87/electro/Window.java b/src/main/java/de/ph87/electro/Window.java
index 67fdb1d..e8b1ae2 100644
--- a/src/main/java/de/ph87/electro/Window.java
+++ b/src/main/java/de/ph87/electro/Window.java
@@ -17,10 +17,12 @@ public class Window extends JFrame {
     setExtendedState(MAXIMIZED_BOTH);
 
     final Sidebar sidebar = new Sidebar();
+    final CircuitPanel circuitPanel = new CircuitPanel();
+
+    sidebar.setRepaintCallback(circuitPanel::repaint);
     sidebar.setPreferredSize(new Dimension(calcWidth(3), 0));
     sidebar.setMinimumSize(new Dimension(calcWidth(1), 0));
 
-    final CircuitPanel circuitPanel = new CircuitPanel();
     circuitPanel.setPreferredSize(new Dimension(calcWidth(8), 0));
     circuitPanel.setMinimumSize(new Dimension(calcWidth(2), 0));
 
diff --git a/src/main/java/de/ph87/electro/circuit/Wire.java b/src/main/java/de/ph87/electro/circuit/Wire.java
index f100417..461c592 100644
--- a/src/main/java/de/ph87/electro/circuit/Wire.java
+++ b/src/main/java/de/ph87/electro/circuit/Wire.java
@@ -10,8 +10,7 @@ import lombok.ToString;
 import java.awt.*;
 import java.awt.geom.Rectangle2D;
 
-import static de.ph87.electro.CONFIG.LABEL_FONT;
-import static de.ph87.electro.CONFIG.WIRE_STROKE;
+import static de.ph87.electro.CONFIG.*;
 import static java.lang.Math.abs;
 import static java.lang.Math.round;
 
@@ -58,8 +57,10 @@ public class Wire {
     g.setStroke(WIRE_STROKE);
     g.drawLine(a.getPosition().absolute.x, a.getPosition().absolute.y, b.getPosition().absolute.x, b.getPosition().absolute.y);
 
-    drawValues(g, "%.2f A".formatted(abs(current)), -0.5);
-    drawValues(g, "%.2f V".formatted(a.getVoltage()), +0.5);
+    if (SHOW_DETAILS) {
+      drawValues(g, "%.2f A".formatted(abs(current)), -0.5);
+      drawValues(g, "%.2f V".formatted(a.getVoltage()), +0.5);
+    }
   }
 
   private void drawValues(final Graphics2D g, final String string, final double offset) {
diff --git a/src/main/java/de/ph87/electro/sidebar/Sidebar.java b/src/main/java/de/ph87/electro/sidebar/Sidebar.java
index 6714928..b09cc7c 100644
--- a/src/main/java/de/ph87/electro/sidebar/Sidebar.java
+++ b/src/main/java/de/ph87/electro/sidebar/Sidebar.java
@@ -2,13 +2,31 @@ package de.ph87.electro.sidebar;
 
 import de.ph87.electro.circuit.part.Part;
 import de.ph87.electro.circuit.part.parts.*;
+import lombok.Setter;
 
 import javax.swing.*;
 import java.awt.*;
 
+import static de.ph87.electro.CONFIG.RASTER;
+import static de.ph87.electro.CONFIG.SHOW_DETAILS;
+
 public class Sidebar extends JPanel {
 
+  private final Button toggleDetails = new Button();
+
+  @Setter
+  private Runnable repaintCallback = null;
+
   public Sidebar() {
+    toggleDetails.setPreferredSize(new Dimension(RASTER, RASTER));
+    toggleDetailsSetLabel();
+    toggleDetails.addActionListener(e -> {
+      SHOW_DETAILS = !SHOW_DETAILS;
+      toggleDetailsSetLabel();
+      triggerRepaint();
+    });
+    add(toggleDetails);
+
     add(new PartBattery());
     add(new PartJunctionCorner());
     add(new PartJunctionEdge());
@@ -20,6 +38,22 @@ public class Sidebar extends JPanel {
     setPreferredSize(new Dimension(0, 200));
   }
 
+  private void toggleDetailsSetLabel() {
+    if (SHOW_DETAILS) {
+      toggleDetails.setLabel("Details");
+      toggleDetails.setBackground(new Color(128,255,128));
+    } else {
+      toggleDetails.setLabel("Details");
+      toggleDetails.setBackground(new Color(255,128,128));
+    }
+  }
+
+  private void triggerRepaint() {
+    if (repaintCallback != null) {
+      repaintCallback.run();
+    }
+  }
+
   private void add(final Part part) {
     final SidebarPart entry = new SidebarPart(part);
     add(entry);