diff --git a/app/src/main/java/com/example/sprout/refactor/Constant.java b/app/src/main/java/com/example/sprout/refactor/Constant.java
index db1ca0a..91c9712 100644
--- a/app/src/main/java/com/example/sprout/refactor/Constant.java
+++ b/app/src/main/java/com/example/sprout/refactor/Constant.java
@@ -6,4 +6,6 @@
 
 public class Constant {
     public static final boolean DEVELOP = false;
+    public static final long ROOM_UPDATE_INTERVAL = 333; // ms
+    public static final long ROOM_UPDATE_DELAY = 50; // ms
 }