diff --git a/Sprint-3/alarmclock/alarmclock.js b/Sprint-3/alarmclock/alarmclock.js
index 6ca81cd3b..29116c2c8 100644
--- a/Sprint-3/alarmclock/alarmclock.js
+++ b/Sprint-3/alarmclock/alarmclock.js
@@ -1,25 +1,48 @@
-function setAlarm() {}
+let timer = null;
+let remaining = 0;
 
-// DO NOT EDIT BELOW HERE
+function formatTime(s) {
+  const m = String(Math.floor(s / 60)).padStart(2, "0");
+  const sec = String(s % 60).padStart(2, "0");
+  return `${m}:${sec}`;
+}
+
+function setAlarm() {
+  clearInterval(timer);
+  audio.pause();
+  document.body.style.backgroundColor = "";
 
-var audio = new Audio("alarmsound.mp3");
+  const input = Number(document.getElementById("alarmSet").value) || 0;
+  remaining = input;
 
-function setup() {
-  document.getElementById("set").addEventListener("click", () => {
-    setAlarm();
-  });
+  const display = document.getElementById("timeRemaining");
+  display.innerText = `Time Remaining: ${formatTime(remaining)}`;
 
-  document.getElementById("stop").addEventListener("click", () => {
-    pauseAlarm();
-  });
-}
+  if (remaining === 0) {
+    playAlarm();
+    return;
+  }
 
-function playAlarm() {
-  audio.play();
+  timer = setInterval(() => {
+    remaining--;
+    display.innerText = `Time Remaining: ${formatTime(remaining)}`;
+
+    if (remaining <= 0) {
+      clearInterval(timer);
+      playAlarm();
+      document.body.style.backgroundColor = "orange";
+    }
+  }, 1000);
 }
 
 function pauseAlarm() {
-  audio.pause();
+  clearInterval(timer);
 }
 
-window.onload = setup;
+function stopAlarm() {
+  clearInterval(timer);
+  audio.pause();
+  audio.currentTime = 0;
+  document.body.style.backgroundColor = "";
+  document.getElementById("timeRemaining").innerText = "Time Remaining: 00:00";
+}