diff --git a/Sprint-3/alarmclock/alarmclock.js b/Sprint-3/alarmclock/alarmclock.js
index 6ca81cd3b..c5be86732 100644
--- a/Sprint-3/alarmclock/alarmclock.js
+++ b/Sprint-3/alarmclock/alarmclock.js
@@ -1,4 +1,27 @@
-function setAlarm() {}
+const title = document.querySelector('title')
+title.textContent = "Alarm clock app";
+function time_convert(num) {
+  let minutes = Math.floor((num % 3600) / 60);
+  let seconds = num % 60;
+  return minutes.toString().padStart(2, '0') + ":" + seconds.toString().padStart(2, '0');
+}
+function setAlarm() {
+  const alarmSetInputEl = document.getElementById("alarmSet");
+  let timeEl = Number(alarmSetInputEl.value); 
+  const timeRemainingCounterEl = document.getElementById("timeRemaining");
+  const interval = setInterval(() => {
+    timeEl--; 
+
+    timeRemainingCounterEl.textContent = `Time Remaining: ${time_convert(timeEl)}`;
+
+    if (timeEl <= 0) {
+      clearInterval(interval);
+      timeRemainingCounterEl.textContent = "Done!";
+      playAlarm();
+    }
+  }, 1000);
+}
+
 
 // DO NOT EDIT BELOW HERE
 
@@ -23,3 +46,4 @@ function pauseAlarm() {
 }
 
 window.onload = setup;
+
diff --git a/Sprint-3/alarmclock/index.html b/Sprint-3/alarmclock/index.html
index 48e2e80d9..d74c5a886 100644
--- a/Sprint-3/alarmclock/index.html
+++ b/Sprint-3/alarmclock/index.html
@@ -18,3 +18,4 @@ <h1 id="timeRemaining">Time Remaining: 00:00</h1>
     <script src="alarmclock.js"></script>
   </body>
 </html>
+