Description: (App free to use for 5 days) </p><p>Turns off the back light (to save on battery) and locks the watch (to prevent any unwanted interaction) </p><p>This is useful when going to sleep. </p><p>The app also reverts the back light level to what it was set upon exiting.</p><p></p><p>Upon starting:</p><p> - Turns off the backlight</p><p> - Locks the watch to prevent any unwanted interaction</p>