Clearing Personal Records; Viewing Data Totals; Viewing Your Time In Each Heart Rate Zone; Deleting History - Garmin FORERUNNER 255 Series Owner's Manual

Clearing Personal Records

1 From the watch face, hold UP.
2 Select History > Records.
3 Select a sport.
4 Select an option:
• To delete one record, select a record, and select
Clear Record >
• To delete all records for the sport, select Clear
All Records > .
NOTE: This does not delete any saved activities.

Viewing Data Totals

You can view the accumulated distance and time data
saved to your watch.
1 From the watch face, hold UP.
2 Select History > Totals.
3 Select an activity.
4 Select an option to view weekly or monthly totals.

Viewing Your Time in Each Heart Rate Zone

Viewing your time in each heart rate zone can help you
adjust your training intensity.
1 From the watch face, hold UP.
2 Select History.
3 Select This Week or Previous Weeks.
4 Select an activity.
5 Press START, and select Heart Rate.

Deleting History

1 From the watch face, hold UP.
2 Select History > Options.
3 Select an option:
• Select Delete All Activities to delete all activities
from the history.
• Select Reset Totals to reset all distance and time
totals.
NOTE: This does not delete any saved activities.

Data Management

NOTE: The device is not compatible with Windows
98, Me, Windows NT , and Mac
®

Deleting Files

NOTICE
If you do not know the purpose of a file, do not delete
it. Your device memory contains important system
files that should not be deleted.
1 Open the Garmin drive or volume.
2 If necessary, open a folder or volume.
3 Select a file.
4 Press the Delete key on your keyboard.
NOTE: If you are using an Apple
26
.
OS 10.3 and earlier.
®
computer, you
®
must empty the Trash folder to completely remove
the files.
NOTE: Mac operating systems provide limited
support for MTP file transfer mode. You must open
the Garmin drive on a Windows operating system.
You should use the Garmin Express application to
remove music files from your device.

Heart Rate Features

The watch has a wrist-based heart rate monitor and is
also compatible with chest heart rate monitors. You
can view heart rate data on the heart rate glance. If
both wrist-based heart rate and chest heart rate data
are available, your watch uses the chest heart rate data.
There are several heart rate-related features available in
the default glance loop.
Your current heart rate in beats per minute
(bpm). There is graph of your heart rate for the
last four hours, highlighting your highest and
lowest heart rate.
Your current stress level. The watch measures
your heart rate variability while you are inactive
to estimate your stress level. A lower number
indicates a lower stress level.
Your current Body Battery energy level. The
watch calculates your current energy reserves
based on sleep, stress, and activity data.
A higher number indicates a higher energy
reserve.
The current saturation of oxygen in your blood.
Knowing your oxygen saturation can help
you determine how your body is adapting to
exercise and stress.
NOTE: The pulse oximeter sensor is located
on the back of the watch.
Wrist-based Heart Rate

Tips for Erratic Heart Rate Data

If the heart rate data is erratic or does not appear, you
can try these tips.
y Clean and dry your arm before putting on the watch.
95,
®
y Avoid wearing sunscreen, lotion, and insect
repellent under the watch.
y Avoid scratching the heart rate sensor on the back
of the watch.
y Wear the watch above your wrist bone. The watch
should be snug but comfortable.
y Wait until the
activity.
y Warm up for 5 to 10 minutes and get a heart rate
reading before starting your activity.
NOTE: In cold environments, warm up indoors.
y Rinse the watch with fresh water after each
workout.
icon is solid before starting your
Heart Rate Features