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
12 days of battery life in smartwatch mode
Receive emails, texts and alerts on your watch when paired with smartphone
Built with a slim design and an always-on, full-color display that’s light on the wrist and easy to read even in direct sunlight.
Long Battery Life
Smaller-sized Forerunner® 255S Music provides up to 12 days of battery life in smartwatch mode and up to 26 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. 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 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.
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.
A Variety of Activity 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 (18 mm, Industry standard)
Strap Material - silicone
Physical Size - 41 x 41 x 12.4 (mm); Fits wrists with a circumference of 110-175 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
Sensors - GPS, Glonass, Galileo, Multi-Frequency Positioning, Garmin Elevate™ Wrist Heart Rate Monitor, Barometric Altimeter, Compass, Gyroscope, Accelerometer, Thermometer
Display Size - 1.1" (27.5mm) Diameter
Display Resolution - 218 x 218 pixels
Display Type - sunlight-visible, transflective memory-in-pixel (MIP)
Weight - 39 g
Smartwatch mode: Up to 12 days
GPS-only GNSS mode: Up to 26 hours
All-Systems GNSS mode with music: Up to 5.5 hours
All-Systems GNSS mode: Up to 20 hours
All-Systems GNSS mode plus Multi-Band: Up to 13 hours
Wrist-Based Heart Rate (Constant, Every Second) - Yes
Daily Resting Heart Rate - Yes
Abnormal Heart Rate Alerts - Yes (high and low)
Respiration Rate (24X7) - Yes
Pulse Ox Blood Oxygen Saturation - Wrist-Based Heart Rate (Constant, Every Second)
Fitness Age - Yes
Body Battery™ Energy Monitor - Yes
All-Day Stress - Yes
Relaxation Breathing Timer - Yes
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)es (spot-check, and optional all-day acclimation and in sleep)
Daily Smart Features
Connectivity - Bluetooth®, ANT+®, Wi-Fi®
Connect IQ™ (Downloadable Watch Faces, Data Fields, Widgets And Apps) - Yes
On-Device Connect IQ™ Store - Yes
Smart Notifications - Yes
Text Response/Reject Phone Call With Text (Android™ Only) - Yes
Calendar - Yes
Weather - Yes
Realtime Settings Sync With Garmin Connect™ Mobile - Yes
Battery Saver (Customizable Low Power Watch) - 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
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)
Gym & Fitness Equipment
Available Gym Activity Profiles - Strength, HIIT, Cardio and Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Pilates, Yoga
Workout Types - Cardio, Strength, HIIT, Yoga, Pilates
Available Run Profiles - Running, Outdoor Track Running, Treadmill Running, Indoor Track Running, Trail Running, Virtual Running, Ultra Running
GPS-Based Distance, Time and Pace - Yes
Available Outdoor Recreation Profiles - Hiking, Skiing, Snowboarding, XC Classic Skiing, Stand Up Paddleboarding, Rowing
Point-to-Point Navigation - Yes
Other Workout Profiles - Cycling Features, Swimming Features