Garmin 910XT - Manual (Page 6)

4 Introduction
5 Charge the Forerunner completely.
A fully charged battery will last up to 20
hours, depending on usage.
Turning on the Forerunner
The first time you use the Forerunner,
you are prompted to choose your system
settings and enter user profile information.
1 Hold to turn on your Forerunner.
2 Follow the on-screen instructions.
3 Go outdoors to an open area.
4 Wait while the Forerunner searches for
satellites.
It may take 30–60 seconds to locate
satellite signals.
The time of day and date are set
automatically.
Using the Backlight
1 Select ENTEr to turn on the backlight.
TIP: You can double-tap the device
screen to turn on the backlight. This
feature is only available in “Run” and
“Other” sport modes.
2 Select , and use ▲ and ▼ to
adjust the backlight level.
This window also displays several
status icons.