diff --git a/data/interfaces/default/info.html b/data/interfaces/default/info.html
index 15e960af..2d71ec2b 100644
--- a/data/interfaces/default/info.html
+++ b/data/interfaces/default/info.html
@@ -931,7 +931,10 @@ DOCUMENTATION :: END
     $.ajax({
         url: 'item_watch_time_stats',
         async: true,
-        data: { rating_key: "${data['rating_key']}" },
+        data: { 
+            rating_key: "${data['rating_key']}",
+            media_type: "${data['media_type']}"    
+        },
         complete: function(xhr, status) {
             $("#watch-time-stats").html(xhr.responseText);
         }
diff --git a/plexpy/datafactory.py b/plexpy/datafactory.py
index 33070a60..eef38b6b 100644
--- a/plexpy/datafactory.py
+++ b/plexpy/datafactory.py
@@ -1134,7 +1134,7 @@ class DataFactory(object):
 
         return library_stats
 
-    def get_watch_time_stats(self, rating_key=None, grouping=None, query_days=None):
+    def get_watch_time_stats(self, rating_key=None, media_type=None, grouping=None, query_days=None):
         if rating_key is None:
             return []
 
@@ -1156,6 +1156,18 @@ class DataFactory(object):
 
         group_by = 'session_history.reference_id' if grouping else 'session_history.id'
 
+        _rating_keys = []
+        if media_type == 'collection':
+            pms_connect = pmsconnect.PmsConnect()
+            result = pms_connect.get_item_children(rating_key=rating_key)
+
+            for child in result['children_list']:
+                _rating_keys.append(child['rating_key'])
+        else:
+            _rating_keys.append(rating_key)
+
+        rating_keys = '(' + ','.join(_rating_keys) + ')'
+
         for days in query_days:
             timestamp_query = timestamp - days * 24 * 60 * 60
 
@@ -1168,10 +1180,11 @@ class DataFactory(object):
                                 'FROM session_history ' \
                                 'JOIN session_history_metadata ON session_history_metadata.id = session_history.id ' \
                                 'WHERE stopped >= %s ' \
-                                'AND (session_history.grandparent_rating_key = ? ' \
-                                'OR session_history.parent_rating_key = ? ' \
-                                'OR session_history.rating_key = ?)' % (group_by, timestamp_query)
-                        result = monitor_db.select(query, args=[rating_key, rating_key, rating_key])
+                                'AND (session_history.grandparent_rating_key IN %s ' \
+                                'OR session_history.parent_rating_key IN %s ' \
+                                'OR session_history.rating_key IN %s)' % (group_by, timestamp_query,
+                                                                        rating_keys, rating_keys, rating_keys)
+                        result = monitor_db.select(query)
                     else:
                         result = []
                 else:
@@ -1181,10 +1194,10 @@ class DataFactory(object):
                                 'COUNT(DISTINCT %s) AS total_plays, section_id ' \
                                 'FROM session_history ' \
                                 'JOIN session_history_metadata ON session_history_metadata.id = session_history.id ' \
-                                'WHERE (session_history.grandparent_rating_key = ? ' \
-                                'OR session_history.parent_rating_key = ? ' \
-                                'OR session_history.rating_key = ?)' % group_by
-                        result = monitor_db.select(query, args=[rating_key, rating_key, rating_key])
+                                'WHERE (session_history.grandparent_rating_key IN %s ' \
+                                'OR session_history.parent_rating_key IN %s ' \
+                                'OR session_history.rating_key IN %s)' % (group_by, rating_keys, rating_keys, rating_keys)
+                        result = monitor_db.select(query)
                     else:
                         result = []
             except Exception as e:
diff --git a/plexpy/webserve.py b/plexpy/webserve.py
index e38f5f8f..ef4d6101 100644
--- a/plexpy/webserve.py
+++ b/plexpy/webserve.py
@@ -4431,10 +4431,10 @@ class WebInterface(object):
 
     @cherrypy.expose
     @requireAuth()
-    def item_watch_time_stats(self, rating_key=None, **kwargs):
+    def item_watch_time_stats(self, rating_key=None, media_type=None, **kwargs):
         if rating_key:
             item_data = datafactory.DataFactory()
-            result = item_data.get_watch_time_stats(rating_key=rating_key)
+            result = item_data.get_watch_time_stats(rating_key=rating_key, media_type=media_type)
         else:
             result = None