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Garmin FORERUNNER 255 MUSIC User Manual

Garmin FORERUNNER 255 MUSIC
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FORERUNNER 255 SERIES
Owner’s Manual

Table of Contents

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Garmin FORERUNNER 255 MUSIC Specifications

General IconGeneral
Resolution260 x 260 pixels
Display TypeSunlight-visible, transflective memory-in-pixel (MIP)
Weight49 g
Battery Life (Smartwatch Mode)Up to 14 days
Battery Life (GPS Mode with Music)Up to 6.5 hours
Battery Life (GPS Mode)Up to 30 hours
Battery Life (All-Systems GNSS Mode)Up to 25 hours
Water Rating5 ATM
Music StorageUp to 500 songs
ConnectivityBluetooth, ANT+, Wi-Fi
Memory/History200 hours of activity data
Dimensions45.6 x 45.6 x 12.9 mm
CompatibilityiPhone, Android
Storage4 GB
Display Size1.3" (33.0 mm) diameter
SensorsBarometric altimeter, Compass, Gyroscope, Accelerometer, Thermometer, Pulse Ox

Summary

Introduction

Setting Up Your Watch

Guide to initial setup tasks for full feature use.

Activities and Apps

Starting an Activity

Steps to start recording an activity, including GPS acquisition.

Stopping an Activity

How to stop, save, resume, or discard a recorded activity.

Going for a Run

Steps to start and record a running activity.

Swimming and Triathlon Training

Swimming Activities

Swimming Features

Overview of swimming capabilities and notices.

Open Water Swimming

Recording open water swim data like distance and pace.

Pool Swimming

How to record pool swims and record intervals.

Strength and HIIT Training

Recording Strength Training

How to record strength training sets and reps.

Recording HIIT Activity

Using specialized timers for high-intensity interval training.

Customizing Activities and Appearance

Creating Custom Activities

Steps to create a new custom activity from scratch or by copying.

Glances Overview

Customizing the Glance Loop

How to change the order, remove, or add glances.

Body Battery Feature

Explains how Body Battery level is calculated and interpreted.

Performance Measurements

VO2 Max. Estimates

Explanation of VO2 max. and how it's calculated.

Predicted Race Times

How the watch estimates target race times based on VO2 max.

HRV Status

How wrist heart rate readings determine heart rate variability status.

Functional Threshold Power (FTP)

How the watch estimates FTP, requiring heart rate and power meter.

Performance Metrics and Training Status

About VO2 Max. Estimates

Detailed explanation of VO2 max. as an indicator of athletic performance.

Getting VO2 Max. for Running

Requirements and steps to get a VO2 max. estimate for running.

Getting VO2 Max. for Cycling

Requirements and steps to get a VO2 max. estimate for cycling.

Viewing Predicted Race Times

How to view predicted race times based on VO2 max. and training history.

Training Status and Load

Heart Rate Variability (HRV) Status

How sleep and wrist HR determine HRV status.

Performance Condition

Real-time assessment of ability to perform compared to fitness level.

Getting FTP Estimate

How to get an FTP estimate, requiring HR monitor and power meter.

Advanced Training Metrics and Syncing

Conducting FTP Test

Step-by-step guide to perform a guided FTP test.

Lactate Threshold

Explains lactate threshold and its importance for training.

Guided Lactate Threshold Test

How to perform a guided test to estimate lactate threshold.

Training Status

Training Status Levels

Describes different training status levels (Detraining, Recovery, etc.).

Acute Load

Weighted sum of excess post-exercise oxygen consumption (EPOC).

Training Load Focus

Analyzes and distributes training load into aerobic and anaerobic categories.

Recovery Time

Estimates how much time until full recovery for the next hard workout.

Training Effect and Controls

About Training Effect

Measures activity impact on aerobic and anaerobic fitness.

Device Features and Customization

Customizing Activities and Apps

How to customize the activities list and data screens.

Activity Alerts

How to set alerts for specific activities to reach goals or navigate.

GPS and Sensor Settings

GPS Settings

Customize satellite systems used for GPS activities.

Barometer and Map Settings

Navigation Settings

Customize map features and appearance for navigation.

Power Manager and System Settings

Power Manager Settings

Settings to manage battery life and extend usage.

System Settings

General settings for language, time, backlight, sound, and more.

Performance Condition Feature

Enables real-time performance assessment during activities.

Device Information and Charging

Charging the Watch

Instructions and tips for charging the device.

Troubleshooting

Step Count Not Appearing

Solutions when the daily step count is not displayed.

Inaccurate Step Count

Tips to improve the accuracy of step count readings.

Step Count Mismatch (Device vs. Connect)

How to resolve discrepancies between device and Garmin Connect step counts.

Inaccurate Floors Climbed

Reasons and solutions for inaccurate floors climbed data.

Troubleshooting

Restarting the Watch

Steps to restart the watch if it becomes unresponsive.

Resetting All Default Settings

How to reset all watch settings to factory defaults.

Maximizing Battery Life

Tips and settings to extend the device's battery life.

Phone Connectivity Troubleshooting

Phone Not Connecting to Watch

Steps to troubleshoot phone connectivity issues.

Manually Pairing ANT+ Sensors

Guide to manually pairing ANT+ sensors with the watch.

Headphones Not Connecting

Tips for connecting Bluetooth headphones to the watch.

Music Playback Issues (Headphones)

Solutions for intermittent music playback or disconnected headphones.

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