Button And Screen Lock - Suunto SPARTAN ULTRA 1.7 User Manual

NOTE: Backlight brightness affects battery life. The brighter the
backlight is, the quicker the battery drains.
Standby backlight
When you are not actively using the watch by touching the screen
or pressing buttons, the watch goes into a standby mode after one
minute. The display is on, but in some low-light conditions, the
screen might not be easily readable.
To improve readability in low-light conditions, you can use the
standby backlight. This is a low-brightness backlight that is on all
the time.
You can toggle the standby backlight on or off from the settings
under General » Backlight » Standby.
Even though the standby backlight brightness is quite low, it
decreases overall battery life because it is on all the time.

3.6 Button and screen lock

While recording an exercise you can lock both the buttons and
screen by keeping the lower right button pressed. Once locked, you
cannot change the display views, but you can turn on the backlight
with any button press if the backlight is in automatic mode.
To unlock everything, keep the lower right button pressed again.
When you are not recording an exercise, the screen locks and dims
after one minute of inactivity. To activate the screen, press any
button.
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