Quick Start Guide
Forerunner210QuickStartManual 9
4. Follow the instructions included
with the software.
This product contains a lithium-ion
battery. See the Important Safety and
Product Information guide in the
product box for product warnings and
other important information.
1 week You are training for 45
minutes per day with
GPS. The Forerunner is in
power save mode for the
remaining time.
Up to 3
weeks
You are using the
Forerunner in power save
mode the entire time.
Up to 8 hours You are training with GPS
the entire time.
*The actual battery life of a fully
charged battery depends on how much
time you use GPS, the backlight,
and power save mode. Exposure to
extremely cold temperatures will also
reduce battery life.
After a period of inactivity, the
Forerunner goes into power save mode.
The Forerunner displays the time and
date, but does not connect with your
ANT+ accessories or use GPS. Press
to exit power save mode.
If the keys or screen stop responding,
you may need to reset the device.
1. Press and hold until the screen
goes blank.
2. Press and hold until the screen
turns on.