diff --git a/client/package.json b/client/package.json
index b1addc3f9..a0c314e8b 100644
--- a/client/package.json
+++ b/client/package.json
@@ -75,7 +75,8 @@
     {
       "locator": "https://github.com/WizardFactory/cordova-plugin-todayweather-config.git",
       "id": "cordova-plugin-todayweather-config"
-    }
+    },
+    "cordova-plugin-apple-watch"
   ],
   "cordovaPlatforms": [
     {
diff --git a/client/www/index.html b/client/www/index.html
index 885be3206..60e79ce73 100644
--- a/client/www/index.html
+++ b/client/www/index.html
@@ -34,6 +34,7 @@
     <script src="js/controller.settingctrl.js"></script>
     <script src="js/controller.tabctrl.js"></script>
     <script src="js/controller.purchase.js"></script>
+    <script src="js/controller.watch.js"></script>
     <script src="js/service.twads.js"></script>
     <script src="js/service.weatherinfo.js"></script>
     <script src="js/service.weatherutil.js"></script>
diff --git a/client/www/js/app.js b/client/www/js/app.js
index 07667368c..bbc9676fd 100644
--- a/client/www/js/app.js
+++ b/client/www/js/app.js
@@ -21,6 +21,7 @@ angular.module('starter', [
     'controller.settingctrl',
     'controller.guidectrl',
     'controller.purchase',
+    'controller.watch',
     'controller.units',
     'controller.start',
     'service.run'
diff --git a/client/www/js/controller.watch.js b/client/www/js/controller.watch.js
new file mode 100644
index 000000000..4609ddb3d
--- /dev/null
+++ b/client/www/js/controller.watch.js
@@ -0,0 +1,39 @@
+/**
+ * Created by aleckim on 2017. 10. 24..
+ * https://github.com/DVenkatesh/cordova-plugin-watchconnectivity
+ */
+
+angular.module('controller.watch', []).factory('Watch', function () {
+    var obj = {};
+    obj.appGroupId;
+
+    obj.sendUserDefaults = function (obj, callback) {
+        if (!this.appGroupId) {
+            return callback(new Error("App group id is null"));
+        }
+
+        applewatch.sendUserDefaults(function () {
+                callback();
+            },
+            function () {
+                callback(new Error("Fail to send user defaults"));
+            },
+            obj, this.appGroupId);
+    };
+
+    obj.init = function (appGroupId) {
+        var that = this;
+        if(window.applewatch == undefined) {
+            console.log("Fail to load applewatch");
+            return;
+        }
+        applewatch.init(function (id) {
+            that.appGroupId = id;
+            console.log('applewatch is initialized group id='+id);
+        }, function () {
+            console.log('applewatch fail to init');
+        }, appGroupId);
+    };
+
+    return obj;
+});
diff --git a/client/www/js/service.run.js b/client/www/js/service.run.js
index 63014d341..21f0a59e0 100644
--- a/client/www/js/service.run.js
+++ b/client/www/js/service.run.js
@@ -1,5 +1,5 @@
 angular.module('service.run', [])
-    .run(function($rootScope, $ionicPlatform, WeatherInfo, Util) {
+    .run(function($rootScope, $ionicPlatform, WeatherInfo, Util, Watch) {
         //위치 재조정해야 함.
         if (twClientConfig.debug) {
             Util.ga.debugMode();
@@ -102,6 +102,10 @@ angular.module('service.run', [])
             Util.ga.trackEvent('app', 'status', 'pause');
         }, false);
 
+        if (ionic.Platform.isIOS()) {
+            Watch.init(Util.suiteName);
+        }
+
         WeatherInfo.loadCities();
         WeatherInfo.loadTowns();
         $ionicPlatform.on('resume', function(){
diff --git a/client/www/js/service.weatherinfo.js b/client/www/js/service.weatherinfo.js
index 6c0e590ea..00ef83e3a 100644
--- a/client/www/js/service.weatherinfo.js
+++ b/client/www/js/service.weatherinfo.js
@@ -1,5 +1,5 @@
 angular.module('service.weatherinfo', [])
-    .factory('WeatherInfo', function ($rootScope, WeatherUtil, Util) {
+    .factory('WeatherInfo', function ($rootScope, WeatherUtil, Util, Watch) {
         var cities = [];
         var cityIndex = -1;
         var obj = {
@@ -295,6 +295,14 @@ angular.module('service.weatherinfo', [])
                 Util.ga.trackEvent('plugin', 'error', 'saveAppPreferences');
                 Util.ga.trackException(error, false);
             }, 'cityList', JSON.stringify(pList));
+
+            if (ionic.Platform.isIOS()) {
+                Watch.sendUserDefaults(pList, function (err) {
+                    if (err) {
+                        Util.ga.trackEvent('watch', 'error', 'sendUserDefaults');
+                    }
+                });
+            }
         };
 
         obj._loadCitiesPreference = function (callback) {