diff --git a/API.md b/API.md
index f9747a1..95f25be 100644
--- a/API.md
+++ b/API.md
@@ -155,8 +155,22 @@ After creating an instance of `orbitd-db`, you can now access the different data
     ```
     
   - **iterator([options])**
+
+    **options** : It is an object which supported the following properties
+
+    `gt` - (String) Greater than
+
+    `gte` - (String) Greater than or equal to
+
+    `lt` - (String) Less than
+
+    `lte` - (String) Less than or equal to
+
+    `limit` - (Integer) Limiting the entries of result
+
+    `reverse` - (Boolean) If set to true will result in reversing the result.
+
     ```javascript
-    // TODO: add all options - gt, gte, lt, lte, limit, reverse
     const all = db.iterator({ limit: -1 })
       .collect()
       .map((e) => e.payload.value)
@@ -205,8 +219,21 @@ After creating an instance of `orbitd-db`, you can now access the different data
     ```
     
   - **iterator([options])**
+
+    **options** : It is an object which supported the following properties
+
+    `gt` - (String) Greater than
+
+    `gte` - (String) Greater than or equal to
+
+    `lt` - (String) Less than
+
+    `lte` - (String) Less than or equal to
+
+    `limit` - (Integer) Limiting the entries of result
+
+    `reverse` - (Boolean) If set to true will result in reversing the result.
     ```javascript
-    // TODO: add all options - gt, gte, lt, lte, limit, reverse
     const all = db.iterator({ limit: -1 })
       .collect()
       .map((e) => e.payload.value)