diff --git a/main.js b/main.js
index f66b44e..4f5aff1 100644
--- a/main.js
+++ b/main.js
@@ -8,14 +8,28 @@ if (!'geolocation' in navigator) {
   speedDiv.innerHTML = 'No API'
 } else {
 	
-  const WID = navigator.geolocation.watchPosition( function (loc) {
-    // got speed
-    if (loc.coords.speed) {
-      console.log('Got speed:',loc.coords.speed)
-      // convert to mph and display
-      speedDiv.innerHTML = (2.23693629205*loc.coords.speed).toFixed(1)
-    } else {
-      speedDiv.innerHTML = '0.0'
+  const WID = navigator.geolocation.watchPosition(
+    
+    // Success
+    function (loc) {
+      if (loc.coords.speed) {
+        console.log('Got speed:',loc.coords.speed)
+        // convert to mph and display
+        speedDiv.innerHTML = (2.23693629205*loc.coords.speed).toFixed(1)
+      } else {
+        speedDiv.innerHTML = '0.0'
+      }
+    },
+    
+    // Error
+    function() {
+      console.error('Could not determine GPS position')
+    },
+    
+    // Options
+    {
+      enableHighAccuracy: true,
     }
-  })
+    
+  )
 }