diff --git a/sketch/obd2_gauge/config.h b/sketch/obd2_gauge/config.h
index 779959e..7f8b1fc 100644
--- a/sketch/obd2_gauge/config.h
+++ b/sketch/obd2_gauge/config.h
@@ -9,26 +9,25 @@ Configuration menu for OBD2 Gauge
 #define FORMAT_SPIFFS_IF_FAILED true
 
 /*------------ SOUND EFFECTS ----------*/
+// Classic Casio Watch Beep (F-91W / G-Shock Module 593: 32768 / 16 = 2048 Hz, exact C7 note)
+inline void casioBeep(uint16_t freq = 2048, uint8_t duration_ms = 24) {
+  ledcWriteTone(buzzerChannel, freq);
+  delay(duration_ms);
+  ledcWriteTone(buzzerChannel, 0);
+}
+
 void beepbeep() {
-  ledcWriteTone(buzzerChannel, 2000);
-  delay(50);
-  ledcWriteTone(buzzerChannel, 0);
-  delay(50);
-  ledcWriteTone(buzzerChannel, 2000);
-  delay(50);
-  ledcWriteTone(buzzerChannel, 0);
+  casioBeep(2048, 35);
+  delay(35);
+  casioBeep(2048, 35);
 }
 
 void beep() {
-  ledcWriteTone(buzzerChannel, 2000);
-  delay(500);
-  ledcWriteTone(buzzerChannel, 0);
+  casioBeep(2048, 200);
 }
 
 void clickSound() {
-  ledcWriteTone(buzzerChannel, 5000);
-  delay(5);
-  ledcWriteTone(buzzerChannel, 0);
+  casioBeep(2048, 24);
 }
 
 // Configuration menu list
diff --git a/sketch/obd2_gauge/obd2_gauge.ino b/sketch/obd2_gauge/obd2_gauge.ino
index ac198f9..39a7aa9 100644
--- a/sketch/obd2_gauge/obd2_gauge.ino
+++ b/sketch/obd2_gauge/obd2_gauge.ino
@@ -368,13 +368,12 @@ void loop() {
       lastTouchX = touchX;
       lastTouchY = touchY;
       longPressHandled = false;
+      casioBeep(2048, 24); // Instant Casio beep on every screen touch!
     } else if (!longPressHandled && (millis() - touchStartTime > 1000)) {
       // Long press (> 1s) or button hold: Open Config Menu!
       longPressHandled = true;
       clickCount = 0;
-      ledcWriteTone(buzzerChannel, 3500);
-      delay(40);
-      ledcWriteTone(buzzerChannel, 0);
+      casioBeep(4096, 35); // High confirmation beep
       configMenu();
       if (foundOBD2) initScreen();
       isTouching = false;
@@ -395,13 +394,7 @@ void loop() {
           if ((millis() - firstClickTime < 400) && (quad == clickQuadrant || fullScreenCell != -1)) {
             // DOUBLE CLICK DETECTED!
             clickCount = 0;
-            ledcWriteTone(buzzerChannel, 5000);
-            delay(15);
-            ledcWriteTone(buzzerChannel, 0);
-            delay(40);
-            ledcWriteTone(buzzerChannel, 5000);
-            delay(15);
-            ledcWriteTone(buzzerChannel, 0);
+            casioBeep(4096, 20); // High confirmation beep on double tap
 
             if (fullScreenCell == -1) {
               fullScreenCell = quad;
@@ -422,9 +415,6 @@ void loop() {
   // Handle single click timeout (after 400ms without a second tap)
   if (clickCount == 1 && (millis() - firstClickTime >= 400)) {
     clickCount = 0;
-    ledcWriteTone(buzzerChannel, 4500);
-    delay(15);
-    ledcWriteTone(buzzerChannel, 0);
 
     if (fullScreenCell != -1) {
       // In full screen: single click toggles between arc and number mode without header flicker