Garmin Forerunner 255 Music Black


Run at a higher level with the Forerunner® 255 Music smartwatch series. These GPS running smartwatches help you train and recover smarter with features such as race widget, which helps you plan your race-day strategy with daily suggested workouts. Morning report with HRV status reveals your overall health along with the day ahead. Plus, get built-in music and up to 14 days of battery life in smartwatch mode for a full picture of your health — from sleep to training.

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Garmin Forerunner 255 Music Black

Run at a higher level with the Forerunner® 255 Music smartwatch series. These running smartwatches help you train and recover smarter with training status, running power, multi-band GPS and daily suggested workouts that adapt to your performance and goals. Plus, get built-in music and other new features — such as race widget — which help you plan your race-day strategy, and morning report with HRV status reveals your overall health alongside the day ahead. And with Garmin Pay™ contactless payments1, it’s never been easier to buy that post-workout coffee — no matter how you work out — with more than 30 activity profiles, including triathlons, cycling, swimming and more. With Forerunner 255, you can get a continuous picture of your health, from training and recovery to sleep quality and overall wellness — and with up to 14 days of battery life in smartwatch mode and up to 30 hours in GPS mode.

MORNING REPORT Morning report summarizes your sleep, HRV status, and daily workout suggestions in one place as soon as you wake up.

BATTERY LIFE Get up to 14 days in smartwatch mode and up to 30 hours in GPS mode.

HRV STATUS HRV status tracks your heart rate variability while you sleep, giving you greater insight into your overall wellness, recovery and training

SPORTS APPS In addition to the 30+ built-in activity profiles, new to the FR255 series is the triathlon activity profile. For races and brick workouts,
transition to the next activity with a single button press

RACE WIDGET Race widget provides training tips and daily suggested workouts while predicting the completion time of your next race based on
course details, fitness data, weather and more.

SUGGESTED WORKOUTS View your entire week of daily suggested workouts, which adapt after every run to match your performance and recovery.

UPDATED DESIGN Available in both 41mm and 46mm-sized cases, and with a noticeably slim profile, Forerunner 255 has the perfect fit for every wrist so
you can wear it (and keep an eye on your wellness) both day and night.

RUNNING POWER Get a continuous measurement on your wrist of how much power you’re applying to the road as you run.

GARMIN PAY™ Leave your cash and cards at home; Garmin Pay™ contactless payments let you pay for purchases on the go.

MULTI-BAND GPS Multi-band satellite tracking on GPS, GLONASS and Galileo networks gives you superior accuracy for how far and how fast you’ve run — even in challenging environments.

TRAINING STATUS Evaluates your current training status to indicate if you’re undertraining or overdoing it; offers additional performance
monitoring features

ACUTE LOAD Compare the intensity of your recent workouts to the optimal range for your fitness and training history.

RUNNING DYNAMICS Provides advanced running dynamics, including ground contact time balance, stride length, vertical ratio and more.

GARMIN COACH Get free adaptive training plans from Garmin Coach, or create your own custom workouts at our Garmin Connect™ online fitness
CONNECTED FEATURES Connected features include built-in smart notifications, automatic uploads to the Garmin Connect™ online fitness community and the
ability to track your runs with the LiveTrack feature.

SAFETY AND TRACKING If you feel unsafe or if your watch senses that an incident occurred, assistance and incident detection features send your location to
emergency contacts. Incident detection is enabled by default for select activity profiles only.

BODY BATTERY™ Track your body’s energy levels so you can find the best times for activity and rest.

MUSIC ON YOUR WRIST Download up to 500 songs to your watch, including playlists from Amazon Music, Deezer or Spotify (premium subscription may be
required) and, connect with your wireless headphones for phone-free listening (music models only)

Garmin Forerunner 255 Music Black




Lens material Corning® Gorilla® Glass 3
Bezel material Fiber-reinforced polymer
Quick release bands Yes (22 mm, Industry standard)
Strap material Silicone
Physical size 45.6 x 45.6 x 12.9 (mm)
Fits wrists with a circumference of 130-205 mm
Colour display
Display Size 1.3″ (33 mm) diameter
Display Resolution 260 x 260 pixels
Display Type Sunlight-visible, transflective memory-in-pixel (MIP)
Weight 49 g
Battery life Smartwatch mode: up to 14 days
GPS-Only GNSS mode: Up to 30 hours
All-Systems GNSS mode: Up to 25 hours
All-Systems GNSS mode plus Multi-Band: Up to 16 hours
See details
Water rating 5 ATM
Memory/history 4 GB

Clock features

GPS time sync
Automatic daylight saving time
Alarm clock
Sunrise/sunset times

Health monitoring

Wrist-based heart rate (constant, every second)
Daily Resting Heart Rate
Abnormal Heart Rate Alerts Yes (high and low)
Respiration rate (24×7)
Pulse Ox Blood Oxygen Saturation Yes (spot-check, and optional all-day acclimation and in sleep)
Fitness age
Body Battery™ Energy Monitor
All-day stress tracking
Relaxation breathing timer
Sleep Yes (Advanced)
Sleep score and insights
Hydration Yes (in Garmin Connect™ and optional Connect IQ™ widget)
Women’s Health Yes (in Garmin Connect™ and optional Connect IQ™ widget)
Health snapshot


Multi-frequency Positioning
Garmin Elevate wrist heart rate monitor
Barometric altimeter
Pulse Ox Blood Oxygen Saturation Monitor

Daily smart features

Connectivity Bluetooth®, ANT+®
Connect IQ (downloadable watch faces, data fields, widgets and apps)
On-device Connect IQ™ Store
Smart Notifications
Text response/reject phone call with text (Android™ only)
Realtime settings sync with Garmin Connect™ mobile
Battery Saver – customisable low power watch
Controls smartphone music
Find my phone
Find my watch
VIRB® camera remote
Smartphone compatibility iPhone® and Android™
Compatible with Garmin Connect Mobile
Garmin Pay™

Safety and tracking features

Live Event Sharing Android™ Only
Incident Detection during select activities

Activity tracking features

Step counter
Move bar (displays on device after a period of inactivity; walk for a couple of minutes to reset it)
Auto goal (learns your activity level and assigns a daily step goal)
Calories burned
Floors climbed
Distance travelled
Intensity minutes
Move IQ™
Garmin Connect™ Challenges app Yes (optional Connect IQ app)

Fitness equipment/gym

Available gym activity profiles Strength, HIIT, Cardio and Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Pilates, Yoga
Cardio workouts
Strength workouts
HIIT workouts
Yoga workouts
Pilates workouts
On-screen workout animations
On-screen workout muscle maps
Automatic rep counting

Training, planning and analysis features

HR zones
HR alerts
HR calories
% HR max
Recovery time
Auto max HR
Morning report
Race glance/widget
HRV status
HR broadcast (broadcasts HR data over ANT+ to paired devices)
Respiration rate (during exercise) Yes (with compatible accessory)
GPS speed and distance
Customisable screen(s)
Customisable activity profiles
Auto Pause®
Interval training
Improved interval (includes open repeats, intervals data page, rest screen and auto detection)
Advanced workouts
Downloadable training plans
Auto Lap®
Manual lap
Rest timer
Configurable lap alerts
VO2 Max (Run)
VO2 Max (Trail Run)
Training status (lets you see if you’re training effectively by tracking your training history and fitness level trend) Improved
Training load (your total training load for the last 7 days calculated from estimated EPOC)
Training load focus
Training effect (aerobic)
Training effect (anaerobic)
Primary benefit (Training Effect labels)
Improved recovery time
Daily suggested workouts Yes (7 days)
Customisable alerts
Audio prompts
Finish time
Virtual partner
Race an activity
Auto multisport activities
Course guidance
Touch and/or button lock
Auto scroll
Activity history on watch
Physio TrueUp

Running features

Available run profiles Running, Outdoor Track Running, Treadmill Running, Indoor Track Running, Trail Running, Virtual Running, Ultra Running
GPS-based distance, time and pace
Running dynamics Yes (with compatible accessory)
Vertical oscillation and ratio Yes (with compatible accessory)
Ground contact time and balance Yes (with compatible accessory)
Stride length (real time) Yes (with compatible accessory)
Cadence (provides real-time number of steps per minute)
Running power Yes (with compatible accessory)
Performance condition
Lactate threshold Yes (with compatible accessory)
PacePro™ Pacing Strategies
Run workouts
Race predictor
Course- and weather-specific race predictor
Foot pod capable

Outdoor recreation

Available outdoor recreation profiles Hiking, Skiing, Snowboarding, XC Classic Skiing, Stand Up Paddleboarding, Rowing
Point-to-point navigation
Bread crumbtrail in real time
Back to start
UltraTrac mode
Up Ahead
Elevation profile
Distance to destination
Barometric trend indicator with storm alert
Trail run auto climb
Vertical speed
Total ascent/descent
Future elevation plot
Projected waypoint
Sun and moon information

Cycling features

Available cycling profiles Biking, Indoor Biking, Mountain Biking, eBiking, eMountain Biking
Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories)
Bike lap and lap maximum power (with power sensor)
Race an activity
FTP (Functional threshold power) Yes (with compatible accessory)
Compatible with Vector™ and Rally™ (power meters)
Power meter compatible
Compatible with Varia Vision™ (head-mounted display)
Compatible with Varia™ radar (rear-facing radar)
Compatible with Varia™ lights
Speed and cadence sensor support (w/sensor)

Swimming features

Available swim profiles Pool swimming, open water swimming
Open-water swim metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), calories)
Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories)
Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only)
Drill logging (pool swim only)
Basic rest timer (up from 0) (pool swim only)
“Repeat on” rest timer (pool swim only)
Auto rest (pool swim only)
Time and distance alerts
Pacing alerts (pool swim only)
Countdown start
Pool swim workouts
Critical swim speed
Underwater wrist-based heart rate
Heart rate from external HRM (real-time during rests, interval and session stats during rests, and automatic heart rate download post-swim) Yes (with HRM-Swim™ or HRM-Pro™)

Kid activity tracking features

Toe-to-Toe™ Challenges app Yes (optional Connect IQ Toe-to-Toe™ Challenges app)


Smart trainer control