diff --git a/akita/overlay/frameworks/base/packages/SystemUI/res/values/dimens.xml b/akita/overlay/frameworks/base/packages/SystemUI/res/values/dimens.xml
index d8dbf67..9124ad1 100644
--- a/akita/overlay/frameworks/base/packages/SystemUI/res/values/dimens.xml
+++ b/akita/overlay/frameworks/base/packages/SystemUI/res/values/dimens.xml
@@ -30,5 +30,8 @@
     <!-- Offset should not be more than 1mm -->
     <dimen name="udfps_burn_in_offset_x">6px</dimen>
     <dimen name="udfps_burn_in_offset_y">17px</dimen>
+
+    <!-- Pixel pitch of the device. um/px -->
+    <item name="pixel_pitch" format="float" type="dimen">59.1</item>
 </resources>