diff --git a/types/is/index.d.ts b/types/is/index.d.ts
index 37b485e0a0..9129f7d664 100644
--- a/types/is/index.d.ts
+++ b/types/is/index.d.ts
@@ -1,8 +1,10 @@
 // Type definitions for is.js
 // Project: http://arasatasaygin.github.io/is.js/
-// Definitions by: Rodrigo Cabral <https://github.com/cabralRodrigo>
+// Definitions by: Rodrigo Cabral <https://github.com/cabralRodrigo>, Mitchell Grice <https://github.com/gricey432>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
+type EnvironmentVersionRange = number | string;
+
 interface IsStatic {
 
     //#region Type checks
@@ -367,29 +369,45 @@ interface IsStatic {
 
     /**
      * Checks if current browser is ie
-     * @parm value Optional version number of browser
+     * @parm value Optional version range of browser
      */
-    ie(value?: number): boolean;
+    ie(range?: EnvironmentVersionRange): boolean;
 
     /**
      * Checks if current browser is chrome.
+     * @parm value Optional version range of browser
      */
-    chrome(): boolean;
+    chrome(range?: EnvironmentVersionRange): boolean;
 
     /**
      * Checks if current browser is firefox.
+     * @parm value Optional version range of browser
      */
-    firefox(): boolean;
+    firefox(range?: EnvironmentVersionRange): boolean;
+
+    /**
+     * Checks if current browser is edge.
+     * @parm value Optional version range of browser
+     */
+    edge(range?: EnvironmentVersionRange): boolean;
 
     /**
      * Checks if current browser is opera.
+     * @parm value Optional version range of browser
      */
-    opera(): boolean;
+    opera(range?: EnvironmentVersionRange): boolean;
 
     /**
      * Checks if current browser is safari.
+     * @parm value Optional version range of browser
      */
-    safari(): boolean;
+    safari(range?: EnvironmentVersionRange): boolean;
+
+    /**
+     * Checks if current browser is phantom.
+     * @parm value Optional version range of browser
+     */
+    phantom(range?: EnvironmentVersionRange): boolean;
 
     /**
      * Checks if current device has ios.
@@ -398,18 +416,21 @@ interface IsStatic {
 
     /**
      * Checks if current device is iPhone.
+     * @parm value Optional version range of device
      */
-    iphone(): boolean;
+    iphone(range?: EnvironmentVersionRange): boolean;
 
     /**
      * Checks if current device is iPad.
+     * @parm value Optional version range of device
      */
-    ipad(): boolean;
+    ipad(range?: EnvironmentVersionRange): boolean;
 
     /**
      * Checks if current device is iPod.
+     * @parm value Optional version range of device
      */
-    ipod(): boolean;
+    ipod(range?: EnvironmentVersionRange): boolean;
 
     /**
      * Checks if current device has Android.
@@ -481,6 +502,11 @@ interface IsStatic {
      */
     offline(): boolean;
 
+    /**
+     * Checks if current device supports touch.
+     */
+    touchDevice(): boolean;
+
     //#endregion
 
     //#region Time checks
diff --git a/types/is/is-tests.ts b/types/is/is-tests.ts
index 77a88a81b3..6f27fd4b7b 100644
--- a/types/is/is-tests.ts
+++ b/types/is/is-tests.ts
@@ -446,32 +446,67 @@ is.all.sorted([[1, 2], [5, 4]]);
 //#region Environment checks
 
 is.ie();
-is.ie(6);
 is.not.ie();
+is.ie(10);
+is.ie('>=10');
+is.not.ie('<9');
 
 is.chrome();
 is.not.chrome();
+is.chrome(50);
+is.chrome('>=40');
+is.not.chrome('<30');
 
 is.firefox();
 is.not.firefox();
+is.firefox(41);
+is.firefox('>=40');
+is.not.firefox('<30');
+
+is.edge();
+is.not.edge();
+is.edge(13);
+is.edge('>=12');
+is.not.edge('<13');
 
 is.opera();
 is.not.opera();
+is.opera(36);
+is.opera('>=35');
+is.not.opera('<20');
 
 is.safari();
 is.not.safari();
+is.safari(9);
+is.safari('>=8');
+is.not.safari('<7');
+
+is.phantom();
+is.not.phantom();
+is.phantom(2);
+is.phantom('>=1');
+is.not.phantom('<2');
 
 is.ios();
 is.not.ios();
 
 is.iphone();
 is.not.iphone();
+is.iphone(9);
+is.iphone('>=7');
+is.not.iphone('<8');
 
 is.ipad();
 is.not.ipad();
+is.ipad(9);
+is.ipad('>=7');
+is.not.ipad('<8');
 
 is.ipod();
 is.not.ipod();
+is.ipod(7);
+is.ipod('>=5');
+is.not.ipod('<5');
 
 is.android();
 is.not.android();
@@ -483,7 +518,6 @@ is.androidTablet();
 is.not.androidTablet();
 
 is.blackberry();
-
 is.not.blackberry();
 
 is.windowsPhone();
@@ -516,6 +550,9 @@ is.not.online();
 is.offline();
 is.not.offline();
 
+is.touchDevice();
+is.not.touchDevice();
+
 //#endregion
 
 //#region Time checks
@@ -664,4 +701,4 @@ is.url('quack');
 var customName = is.setNamespace();
 customName.odd(3);
 
-//#endregion
\ No newline at end of file
+//#endregion