diff --git a/Settings.md b/Settings.md
index c54f170..bbfd495 100644
--- a/Settings.md
+++ b/Settings.md
@@ -141,4 +141,8 @@ Allows the sensitivity of the encoder dial to be adjusted between Low, Normal, a
 ## SD Card
 ![SCR_0040](https://github.com/portapack-mayhem/mayhem-firmware/assets/129641948/ec2409fc-f830-4a48-8328-8e386e131491)
 
-Enables higher speed access to the SD card (only works on higher-speed SD card models).  Use the Test button to try it before saving this setting in persistent memory.  Files may not be read or written properly if this is enabled on a slower SD card.
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+Enables higher speed access to the SD card (only works on higher-speed SD card models).  Use the Test button to try it before saving this setting in persistent memory.  Files may not be read or written properly if this is enabled on a slower SD card.
+
+## Fake brightness 
+It’s not really changing the voltage of led backlight, but use a “cover layout” like those brightness adjustments android app do (actually it’s changing all the rendering color but I was just make it sounds more clear)
+So don’t expect image quality but it indeed saves some eyesight in night.
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