TUNE YOUR TRAINING
Add a beat to your step. Get the training and recovery insights you need to run at a higher level — plus music to motivate you along the way.
Tracks your runs with GPS
Get personalized fitness and health stats
14 days of battery life in smartwatch mode
Receive emails, texts and alerts on your watch when paired with smartphone
Forerunner® 255 Music provides up to 14 days of battery life in smartwatch mode and up to 30 hours in GPS mode for a full picture of your health — from sleep to training.
Connect and Listen
Download up to 500 songs to your watch, including playlists from Spotify, Amazon Music or Deezer (subscription required), and connect with your wireless headphones for phone-free listening.
Morning report summarizes your sleep, recovery time, training status, HRV status and daily workout suggestion in one place as soon as you wake up (This device is intended to give an estimate of your activity and metrics).
Get ready for your next race with training tips, personalized daily suggested workouts and completion time predictions based on course details, weather and performance. View your entire week of daily suggested workouts, which adapt after every run to match your performance and recovery.
HRV status tracks your heart rate variability while you sleep, giving you greater insight into your overall wellness, recovery and training performance (This device is intended to give an estimate of your activity and metrics).
Get free adaptive training plans from Garmin Coach for a 5K, 10K and half-marathon, or create your own custom workouts in the Garmin Connect™ smartphone app.
Variety of Profiles
Switch up your workout routine with activity profiles for running, triathlon, cycling, open-water swimming and more.
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. Safety and tracking features make it easy to share your location with chosen contacts if you feel unsafe, if an incident is detected or for loved ones to track your runs (Requires setup and your smartphone to be in an area with network coverage where data connectivity is available).
Receive emails, texts and alerts right on your watch when paired with your Apple® or Android™ smartphone; you can even respond to texts if you have an Android phone.
With a supported bank, leave your cash and cards at home; Garmin Pay™ contactless payments let you pay for purchases on the go.
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
Water Rating - 5 ATM
Memory/History - 4 GB
Clock Features - Time/Date, GPS Time Sync, Automatic Daylight Saving Time, Alarm Clock, Timer, Stopwatch, 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 (24X7) - Yes
Pulse Ox Blood Oxygen Saturation - Yes (spot-check, and optional all-day acclimation and in sleep)
Sleep - Yes (advanced)
Hydration - Yes (in Garmin Connect™ and optional Connect IQ™ widget)
Women's Health - Yes (in Garmin Connect™ and optional Connect IQ™ widget)
Sensors - GPS, Glonass, Galileo, Multi-Frequency Positioning, Garmin Elevate™ Wrist Heart Rate Monitor, Barometric Altimeter, Compass, Gyroscope, Accelerometer, Thermometer
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
Smartwatch mode: Up to 14 days
GPS-only GNSS mode: Up to 30 hours
All-Systems GNSS mode with music: Up to 6.5 hours
All-Systems GNSS mode: Up to 25 hours
All-Systems GNSS mode plus Multi-Band: Up to 16 hours
Daily Smart Features
Connectivity - Bluetooth®, ANT+®, Wi-Fi®
Connect IQ™ (Downloadable Watch Faces, Data Fields, Widgets And Apps) - Yes
Smart Notifications - Yes
Calendar - Yes
Weather - Yes
Realtime Settings Sync With Garmin Connect™ Mobile - Yes
Battery Saver (Customizable Low Power Watch) - Yes
Smartphone Compatibility iPhone® and Android™ - Yes
Pairs With Garmin Connect™ Mobile - Yes
Garmin Pay™ - Yes
Controls Smartphone Music - Yes
Plays And Controls Watch Music - Yes
Music Storage - up to 500 songs
Safety and Tracking Features
Livetrack - Yes
Live Event Sharing - Android™ Only
Incident Detection During Select Activities - Yes
Activity Tracking Features
Step Counter - Yes
Move Bar (Displays On Device After A Period Of Inactivity; Walk For A Couple Of Minutes To Reset It) - Yes
Auto Goal (Learns Your Activity Level And Assigns A Daily Step Goal) - Yes
Calories Burned - Yes
Floors Climbed - Yes
Distance Traveled - Yes
Intensity Minutes - Yes
Trueup™ - Yes
Move IQ™ - Yes
Garmin Connect™ Challenges App - yes (optional Connect IQ app)
Gym & Fitness Equipment
Available Gym Activity Profiles - Strength, HIIT, Cardio and Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Pilates, Yoga
Workouts Available - Cardio, Strength, HIIT, Yoga, Pilates
GPS-Based Distance, Time and Pace - Yes
Running Dynamics - Yes (with compatible accessory)
Available Outdoor Recreation Profiles - Hiking, Skiing, Snowboarding, XC Classic Skiing, Stand Up Paddleboarding, Rowing
Point-to-Point Navigation - Yes
Elevation Profile - Yes
Other Special Workout Profiles - Cycling Features, Swimming Features