diff --git a/src/game/lib/realtime_stage_timer.js b/src/game/lib/realtime_stage_timer.js
new file mode 100644
index 0000000..043a3fd
--- /dev/null
+++ b/src/game/lib/realtime_stage_timer.js
@@ -0,0 +1,78 @@
+function RealtimeStageTimer(timeLimitMS) {
+	this.timeLimit = timeLimitMS;
+
+	this.startTime = 0;
+	this.elapsedTime = 0;
+	this.isPaused = true;
+
+	this.onTimeUpdate = null;
+
+	this.timerEvent = null;
+}
+
+RealtimeStageTimer.prototype.setTimeUpdateEvent = function(eventMethod) {
+	this.onTimeUpdate = eventMethod;
+}
+
+RealtimeStageTimer.prototype.start = function() {
+	this.isPaused = false;
+	this.startTime = game.time.totalElapsedSeconds();
+
+	this.elapsedTimer = game.time.create(false);
+	this.timerEvent = this.elapsedTimer.loop(10, this.updateTimer, this);
+	this.elapsedTimer.start();
+
+	this.sendElapsedTime();
+}
+
+RealtimeStageTimer.prototype.pause = function() {
+	this.isPaused = true;
+}
+
+RealtimeStageTimer.prototype.resume = function() {
+	this.isPaused = false;
+}
+
+RealtimeStageTimer.prototype.stop = function() {
+	var recordTime = game.time.totalElapsedSeconds() - this.startTime;
+	this.removeTimer();
+
+	return recordTime;
+}
+
+RealtimeStageTimer.prototype.updateTimer = function() {
+	if(this.isPaused == true)
+		return;
+
+	this.elapsedTime = game.time.totalElapsedSeconds() - this.startTime;
+	this.sendElapsedTime();
+}
+
+RealtimeStageTimer.prototype.sendElapsedTime = function() {
+	if(this.onTimeUpdate === null)
+		return;
+
+	var timeLeft = this.timeLimit - this.elapsedTime;
+	this.onTimeUpdate(timeLeft);
+}
+
+RealtimeStageTimer.prototype.removeTimer = function() {
+	game.time.events.remove(this.timerEvent);
+	if(this.timerEvent)
+		this.timerEvent = null;
+
+	this.elapsedTimer.stop();
+	this.elapsedTimer = null;
+}
+
+
+
+RealtimeStageTimer.FONT_HEIGHT_PX		= 70;
+
+RealtimeStageTimer.DEFAULT_TEXT_FONT	= {
+	font: "38px Arial",
+	align: "center",
+	boundsAlignH: "center",		// left, center. right
+	boundsAlignV: "middle", 	// top, middle, bottom
+	fill: "#fff"
+};
\ No newline at end of file
diff --git a/src/game/lib/util/record_util.js b/src/game/lib/util/record_util.js
index ce86b57..2883f05 100644
--- a/src/game/lib/util/record_util.js
+++ b/src/game/lib/util/record_util.js
@@ -16,7 +16,7 @@ RecordUtil.getRecordValueText = function(record, appID) {
 }
 
 RecordUtil.getRecordUnit = function(appID) {
-	if(appID == 104 || appID == 105)	// dodge
+	if(appID == 104 || appID == 105)	// 104 : dodge, 105 : one to fifty
 		return " 초";
 	else if(appID == 52 || appID == 53)	// word flyingsaucer
 		return " 점";
diff --git a/src/game/lib/util/time_util.js b/src/game/lib/util/time_util.js
new file mode 100644
index 0000000..6d04e99
--- /dev/null
+++ b/src/game/lib/util/time_util.js
@@ -0,0 +1,78 @@
+function TimeUtil() {
+}
+
+
+TimeUtil.getFullHourFromMS = function(timeMS) {
+	return Math.floor(timeMS / TimeUtil.HOUR_MS);
+}
+
+TimeUtil.getHourFromMS = function(timeMS) {
+	return TimeUtil.getFullHourFromMS(timeMS) % 24;
+}
+
+TimeUtil.getTwoDigitHourFromMS = function(timeMS) {
+	var twoDigitHour = TimeUtil.getHourFromMS(timeMS);
+	return StringUtil.getNumberStartWithZero(twoDigitHour, 2);
+}
+
+
+TimeUtil.getFullMinuteFromMS = function(timeMS) {
+	return Math.floor(timeMS / TimeUtil.MINUTE_MS);
+}
+
+TimeUtil.getMinuteFromMS = function(timeMS) {
+	return TimeUtil.getFullMinuteFromMS(timeMS) % 60;
+}
+
+TimeUtil.getTwoDigitMinuteFromMS = function(timeMS) {
+	var twoDigitMinute = TimeUtil.getMinuteFromMS(timeMS);
+	return StringUtil.getNumberStartWithZero(twoDigitMinute, 2);
+}
+
+
+TimeUtil.getFullSecondFromMS = function(timeMS) {
+	return Math.floor(timeMS / TimeUtil.SECOND_MS);
+}
+
+TimeUtil.getSecondFromMS = function(timeMS) {
+	return TimeUtil.getFullSecondFromMS(timeMS) % 60;
+}
+
+TimeUtil.getTwoDigitSecondFromMS = function(timeMS) {
+	var twoDigitSecond = TimeUtil.getSecondFromMS(timeMS);
+	return StringUtil.getNumberStartWithZero(twoDigitSecond, 2);
+}
+
+
+
+
+
+TimeUtil.getYYYYMMDD = function(date) {
+	// return date.toISOString().slice(0,10);
+	return TimeUtil.getFullYear(date) + "-"
+		+ TimeUtil.getFullMonth(date) + "-"
+		+ TimeUtil.getFullDate(date);
+}
+
+TimeUtil.getHHMMSS = function(date) {
+	return TimeUtil.getFullHours(date) + ":"
+		+ TimeUtil.getFullMinutes(date) + ":"
+		+ TimeUtil.getFullSeconds(date);
+}
+
+TimeUtil.printMonthDay = function(date) {
+	// var dateTime = new Date(date);
+	var a = date.split(" ");
+	var d = a[0].split("-");
+	var t = "0:0:0".split(":");
+	if(a.count > 0)
+		var t = a[1].split(":");
+	var dateTime = new Date(d[0],(d[1]-1),d[2],t[0],t[1],t[2]);
+	return TimeUtil.getFullMonth(dateTime) + "월 " + TimeUtil.getFullDate(dateTime) + "일";
+}
+
+
+TimeUtil.SECOND_MS	= 1000;
+TimeUtil.MINUTE_MS	= TimeUtil.SECOND_MS * 60;
+TimeUtil.HOUR_MS	= TimeUtil.MINUTE_MS * 60;
+TimeUtil.DAY_MS		= TimeUtil.HOUR_MS * 24;
\ No newline at end of file
diff --git a/src/game/typing/examination/game.js b/src/game/typing/examination/game.js
index 52334b5..54c6a30 100644
--- a/src/game/typing/examination/game.js
+++ b/src/game/typing/examination/game.js
@@ -46,6 +46,18 @@ TypingExamination.prototype.create = function() {
 
 	this.averageTypingSpeedText = new AverageTypingSpeed();
 
+	this.textTimer = this.makeDefaultText(960, 30);
+	this.textTimer.anchor.set(1, 0.5);
+	this.textTimer.fontSize = 30;
+
+	this.stageTimer = new RealtimeStageTimer(Phaser.Timer.SECOND * 300);
+	this.stageTimer.setTimeUpdateEvent(
+		(function(timeLeftMS) {
+			this.textTimer.text = "남은 시간 : " + Math.floor(timeLeftMS);
+		}).bind(this)
+	);
+	this.stageTimer.start();
+	/*
 	this.stageTimer = new StageTimer(
 		TypingExamination.GAME_TIME_SEC,
 		(function() {
@@ -53,6 +65,7 @@ TypingExamination.prototype.create = function() {
 			this.timeOver();
 		}).bind(this)
 	);
+	*/
 
 
 	// bottom ui
@@ -209,9 +222,9 @@ TypingExamination.prototype.makeTextContents = function() {
 	this.inputTextContent.canvasInput.placeHolder("");
 	// inputTextContent.canvasInput._onkeydown = this.checkInputText;
 	this.inputTextContent.canvasInput._onkeyup = (function() {
-		this.checkTypingContents(event);
+		this.onKeyUp(event);
 		// warning
-		// 	 : checkTypingContents is called onkeyup and onkeydown
+		// 	 : onKeyUp is called onkeyup and onkeydown
 	}).bind(this);
 
 	this.loadExaminationContent();
@@ -265,7 +278,7 @@ TypingExamination.prototype.startGame = function() {
 	this.showTypingExaminationContents();
 	this.showPlayingWordNumber();
 
-	this.stageTimer.start();
+	// this.stageTimer.start();
 }
 
 TypingExamination.prototype.timeOver = function() {
@@ -277,7 +290,7 @@ TypingExamination.prototype.gameOver = function() {
 	var missionClearText = new MissionClearText();
 	this.stopAndGoResult();
 
-	this.stageTimer.pause();
+	// this.stageTimer.pause();
 }
 
 TypingExamination.prototype.stopAndGoResult = function() {
@@ -393,6 +406,7 @@ TypingExamination.prototype.completeLoadingWriting = function() {
 	this.typingExaminationContents = typingTextMan.getContents();
 	// console.log(this.typingExaminationContents.length);
 	// console.log(this.typingExaminationContents[this.typingExaminationContents.length - 1]);
+
 	var lastSentence = this.typingExaminationContents[this.typingExaminationContents.length - 1];
 	if(lastSentence[lastSentence.length - 1] !== TypingExamination.ENTER_INDICATOR)
 		this.typingExaminationContents[this.typingExaminationContents.length - 1] += TypingExamination.ENTER_INDICATOR;
@@ -427,7 +441,6 @@ TypingExamination.prototype.showTypingExaminationContents = function() {
 		} else {
 			// console.log(this.typingExaminationContents[doneIndex] + "/");
 			this.textTypingContentsDone[i].text = this.typingExaminationContents[doneIndex];
-			// this.textDoneLineNumber[i].text = NumberUtil.getRecordText(Math.floor(this.typingRecordForLines[doneIndex]));
 
 			var lineNumber = this.typingContentLength - doneIndex;
 			this.textDoneLineNumber[i].text = NumberUtil.numberWithCommas(lineNumber) + " ";
@@ -463,14 +476,18 @@ TypingExamination.prototype.resetTypingContent = function() {
 	this.inputTextContent.canvasInput.value('');
 }
 
-TypingExamination.prototype.checkTypingContents = function(event) {
+TypingExamination.prototype.onKeyUp = function(event) {
 	if(this.isGameOver)
 		return;
 
+	if(this.isTyping == false) {
+		// console.log(event);
+		this.setTimeTypingStart();
+	}
+
 	//not trimmed contents
 	var notTrimmedInputContent = this.inputTextContent.canvasInput.value();
 	var notTrimmedTypingContent = this.typingExaminationContents[this.typingIndex];
-	this.showTypingContentHighlight(notTrimmedInputContent, notTrimmedTypingContent);
 
 	// trimmed contents
 	// var inputContent = inputText.replace(/ /g, TypingExamination.SPACE_INDICATOR);
@@ -479,64 +496,65 @@ TypingExamination.prototype.checkTypingContents = function(event) {
 	var trimmedTypingContent = this.typingExaminationContents[this.typingIndex].trim();
 	trimmedTypingContent = trimmedTypingContent.replace(TypingExamination.ENTER_INDICATOR, "");
 
-	if(event.keyCode == Phaser.Keyboard.ENTER ||
-		event.keyCode == Phaser.Keyboard.SPACEBAR) {
-		// console.log("### enter ###");
-		// console.log("this.typingIndex : " + this.typingIndex);
-		// console.log("trimmedInputContent : [" + trimmedInputContent + "], length : " + trimmedInputContent.length);
-		// console.log("trimmedTypingContent : [" + trimmedTypingContent + "], length : " + trimmedTypingContent.length);
+	this.highlightTypingContent(notTrimmedInputContent, notTrimmedTypingContent);
 
-		if(trimmedInputContent === trimmedTypingContent) {
-			// console.log("input completed");
-			this.calculateTypingRecord(notTrimmedTypingContent);
-
-			// console.log("this.typingIndex : " + this.typingIndex);
-			// console.log("this.trimmedTypingContentLength : " + this.trimmedTypingContentLength);
-			if(this.typingIndex == this.typingContentLength - 1) {
-				this.isGameOver = true;
-				this.gameOver();
-				return;
-			}
-
-			this.playNextContent();
-			return;
-		}
-	}
-
-	if(this.isTyping == false) {
-		// console.log(event);
-		this.setTimeTypingStart();
-	}
+	if(event.keyCode == Phaser.Keyboard.ENTER)
+		this.onKeyEnter(trimmedInputContent, trimmedTypingContent, notTrimmedTypingContent);
 
+	if(event.keyCode == Phaser.Keyboard.SPACEBAR)
+		this.onKeyEnter(trimmedInputContent, trimmedTypingContent, notTrimmedTypingContent);
 }
 
-TypingExamination.prototype.showTypingContentHighlight = function(inputContent, typingContent) {
-	// console.log(inputContent + "=");
+TypingExamination.prototype.onKeyEnter = function(trimmedInputContent, trimmedTypingContent, notTrimmedTypingContent) {
+	// console.log("### enter ###");
+	// console.log("this.typingIndex : " + this.typingIndex);
+	// console.log("trimmedInputContent : [" + trimmedInputContent + "], length : " + trimmedInputContent.length);
+	// console.log("trimmedTypingContent : [" + trimmedTypingContent + "], length : " + trimmedTypingContent.length);
+
+	if(trimmedInputContent === trimmedTypingContent) {
+		// console.log("input completed");
+		this.calculateTypingRecord(notTrimmedTypingContent);
+
+		// console.log("this.typingIndex : " + this.typingIndex);
+		// console.log("this.trimmedTypingContentLength : " + this.trimmedTypingContentLength);
+		if(this.typingIndex == this.typingContentLength - 1) {
+			this.isGameOver = true;
+			this.gameOver();
+			return;
+		}
+
+		this.playNextContent();
+		return;
+	}
+}
+
+TypingExamination.prototype.highlightTypingContent = function(notTrimmedInputContent, notTrimmedTypingContent) {
+	// console.log(notTrimmedInputContent + "=");
 	// console.log(typingContent + "=");
 
-	if(typingContent == null)
+	if(notTrimmedTypingContent == null)
 		return;
 
-	// var replaceSpaceIndicatorInputContent = inputContent.replace(/ /g, TypingExamination.SPACE_INDICATOR);
-	var typingContentLength = typingContent.length;
+	// var replaceSpaceIndicatorInputContent = notTrimmedInputContent.replace(/ /g, TypingExamination.SPACE_INDICATOR);
+	var typingContentLength = notTrimmedTypingContent.length;
 	for(var i = 0; i < typingContentLength; i++) {
-		var typingChar = typingContent.charAt(i);
-		var inputChar = inputContent.charAt(i);
+		var typingChar = notTrimmedTypingContent.charAt(i);
+		var inputChar = notTrimmedInputContent.charAt(i);
 		// console.log("typingChar : " + typingChar);
 		// console.log("inputChar : " + inputChar);
 
 		// when typingChar is the last letter
 		if(isNaN(inputChar)) {
 			// console.log("NaN : " + i);
-			this.setCorrectText(typingContent.substring(0, i + 1));
+			this.setCorrectText(notTrimmedTypingContent.substring(0, i + 1));
 		}
 
-		if(typingChar != inputChar) {
-			// console.log("inputContent.charAt(" + i + ") : " + inputContent.charCodeAt(i).toString(16) + ", " + inputChar);
-			// console.log("typingContent.charAt(" + i + ") : " + typingContent.charCodeAt(i).toString(16) + ", " + typingChar);
+		if(typingChar !== inputChar) {
+			// console.log("notTrimmedInputContent.charAt(" + i + ") : " + notTrimmedInputContent.charCodeAt(i).toString(16) + ", " + inputChar);
+			// console.log("notTrimmedTypingContent.charAt(" + i + ") : " + notTrimmedTypingContent.charCodeAt(i).toString(16) + ", " + typingChar);
 
-			this.textNextLetterIndicator.text = typingContent.substring(0, i + 1);
-			this.setCorrectText(typingContent.substring(0, i));
+			this.textNextLetterIndicator.text = notTrimmedTypingContent.substring(0, i + 1);
+			this.setCorrectText(notTrimmedTypingContent.substring(0, i));
 			return;
 		}
 	}
diff --git a/src/web/client/typing_exam.html b/src/web/client/typing_exam.html
index a48ed3e..5f34364 100644
--- a/src/web/client/typing_exam.html
+++ b/src/web/client/typing_exam.html
@@ -61,7 +61,7 @@
 		<script src="../../game/lib/db_connect_manager.js"></script>
 		<script src="../../game/lib/db_service.js"></script>
 		<script src="../../game/lib/experience_app_timer.js"></script>
-		<script src="../../game/lib/stage_timer.js"></script>
+		<script src="../../game/lib/realtime_stage_timer.js"></script>
 
 		<!-- Examination typing : source files -->
 		<script src="../../game/typing/lib/content_progress.js"></script>
diff --git a/test/tdd.html b/test/tdd.html
index 83fdfe5..05c11ff 100644
--- a/test/tdd.html
+++ b/test/tdd.html
@@ -31,6 +31,7 @@
 	<script src="../src/game/lib/util/string_util.js"></script>
 	<script src="../src/game/lib/util/date_util.js"></script>
 	<script src="../src/game/lib/util/number_util.js"></script>
+	<script src="../src/game/lib/util/time_util.js"></script>
 	<script src="../src/game/typing/lib/key_mapper.js"></script>
 	<script src="../src/game/typing/lib/keyboard.js"></script>
 	<script src="../src/game/lib/history_record_manager.js"></script>
diff --git a/test/tdd.js b/test/tdd.js
index a9b9534..a454884 100644
--- a/test/tdd.js
+++ b/test/tdd.js
@@ -1,3 +1,54 @@
+//////////////////////////////////////////////////
+// TimeUtil
+
+QUnit.test( "TimeUtil", function( assert ) {
+	var SEC_MS = 1000;
+	var MIN_MS = 60 * SEC_MS;
+	var HR_MS = 60 * MIN_MS;
+	var DAY_MS = 24 * HR_MS;
+
+	var testDay = 1 * DAY_MS;
+	var testHour = 23 * HR_MS;
+	var testMinute = 11 * MIN_MS;
+	var testSecond = 56 * SEC_MS;
+	var testMilliSecond = 123;
+	var testTimeMS = testDay + testHour + testMinute + testSecond + testMilliSecond;
+
+	assert.equal(TimeUtil.getFullSecondFromMS(testTimeMS), 169916, "getFullSecondFromMS");
+	assert.equal(TimeUtil.getSecondFromMS(testTimeMS), 56, "getSecondFromMS");
+	assert.equal(TimeUtil.getTwoDigitSecondFromMS(testTimeMS), "56", "getTwoDigitSecondFromMS");
+
+	assert.equal(TimeUtil.getFullMinuteFromMS(testTimeMS), 2831, "getFullMinuteFromMS");
+	assert.equal(TimeUtil.getMinuteFromMS(testTimeMS), 11, "getMinuteFromMS");
+	assert.equal(TimeUtil.getTwoDigitMinuteFromMS(testTimeMS), "11", "getTwoDigitMinuteFromMS");
+
+	assert.equal(TimeUtil.getFullHourFromMS(testTimeMS), 47, "getFullHourFromMS");
+	assert.equal(TimeUtil.getHourFromMS(testTimeMS), 23, "getHourFromMS");
+	assert.equal(TimeUtil.getTwoDigitHourFromMS(testTimeMS), "23", "getTwoDigitHourFromMS");
+
+
+	testDay = 0 * DAY_MS;
+	testHour = 9 * HR_MS;
+	testMinute = 5 * MIN_MS;
+	testSecond = 4 * SEC_MS;
+	testMilliSecond = 1;
+	testTimeMS = testDay + testHour + testMinute + testSecond + testMilliSecond;
+
+	assert.equal(TimeUtil.getFullSecondFromMS(testTimeMS), 32704, "getFullSecondFromMS");
+	assert.equal(TimeUtil.getSecondFromMS(testTimeMS), 4, "getSecondFromMS");
+	assert.equal(TimeUtil.getTwoDigitSecondFromMS(testTimeMS), "04", "getTwoDigitSecondFromMS");
+
+	assert.equal(TimeUtil.getFullMinuteFromMS(testTimeMS), 545, "getFullMinuteFromMS");
+	assert.equal(TimeUtil.getMinuteFromMS(testTimeMS), 5, "getMinuteFromMS");
+	assert.equal(TimeUtil.getTwoDigitMinuteFromMS(testTimeMS), "05", "getTwoDigitMinuteFromMS");
+
+	assert.equal(TimeUtil.getFullHourFromMS(testTimeMS), 9, "getFullHourFromMS");
+	assert.equal(TimeUtil.getHourFromMS(testTimeMS), 9, "getHourFromMS");
+	assert.equal(TimeUtil.getTwoDigitHourFromMS(testTimeMS), "09", "getTwoDigitHourFromMS");
+
+});
+
+
 //////////////////////////////////////////////////
 // app list DB