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Forerunner 735XT Stays On Backlight Setting
The Forerunner 735XT has a backlight setting that allows the backlight to stay on throughout an entire recorded activity. This setting will not effect the backlight setting while the watch is on it's watch face. You can turn on the Stays On setting by following the steps below.
Press the Start/Stop (top right) button.
Select Menu.
Select Settings.
Select System.
Select Backlight.
Select Timeout.
Select Stays On.
During an activity while the setting is on, the backlight will only turn off if the light button (top left) is pressed.