diff --git a/antonclk/antonclk.app.js b/antonclk/antonclk.app.js
index 5eca1ed..16837d9 100644
--- a/antonclk/antonclk.app.js
+++ b/antonclk/antonclk.app.js
@@ -42,7 +42,7 @@
 				let intervals = Math.floor(Tt1 / fifteenMinutes);
 				if (intervals > (stopWatch.buzz1 || 0)) {
 					stopWatch.buzz1 = intervals;
-					Bangle.buzz();
+					Bangle.buzz(500);
 					saveStopWatch();
 				}
 			}
@@ -61,7 +61,7 @@
 				const oneMinute = 60 * 1000;
 				if (!stopWatch.buzzed2 && Tt2 >= oneMinute) {
 					stopWatch.buzzed2 = true;
-					Bangle.buzz();
+					Bangle.buzz(500);
 					saveStopWatch();
 				}
 			}