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- Order number: GAR-0100264130
Get an uninterrupted picture of your daily health and nightly sleep with up to 14 days of battery life in smartwatch mode and up to 30 hours in GPS mode.
(ALMOST) AS LIGHT AS A FEATHER
With its sleek design and 49g weight, you'll almost forget you're wearing a Forerunner® 255 Music running smartwatch — even when you're asleep.
SWEAT-READY MATERIALS
Featuring easy-to-use buttons and a silicone band, this watch is ready to wear — and tear — with durable Corning® Gorilla® Glass 3.
MORNING REPORT
Receive an overview of your sleep, recovery and training outlook as soon as you wake up — alongside HRV status and weather. You can even customise your report to show you what you want to see.
HRV STATUS
Gain a deeper understanding of your overall health, recovery and training performance through heart rate variability while you sleep, based on technology developed by our Firstbeat Analytics™ team.
BUILT-IN SPORTS APPS
Tap into 30+ built-in activities, including the triathlon and open-water swimming profiles — new to the Forerunner 255 running watch series. For races and brick workouts, transition to the next activity with a single button press.
GARMIN COACH
Train for an event, achieve a milestone, or improve your fitness with Garmin Coach training plans for runners. Just set it up in the Garmin Connect™ app, then let Garmin Coach create personalised daily workouts to help you reach your goals — from your first 5K to a full marathon. This includes Garmin Run Coach, which creates plans that adapt based on your performance, recovery and health metrics.
TRIATHLON AND MULTISPORT PROFILES
Switch between sports automatically by using built-in profiles for triathlons, duathlons, brick workouts and swimruns – so you can focus on the race and let your watch take care of recording splits. You can also create your own custom multisport profiles.
WRIST-BASED RUNNING DYNAMICS
This smartwatch measures crucial running metrics such as cadence, stride length, ground contact time and more.
WRIST-BASED RUNNING POWER
See how much power you’re applying to the trail or the road so you can manage your effort and fine-tune your training. No accessory required.
RECOVERY TIME
Know how long to recover before your next high-effort workout based on your latest training as well as overall stress, sleep and daily activities outside of workouts.
PACEPRO™ FEATURE
To help you plan your race day strategy, this feature offers GPS-based pace guidance for a selected course or distance, so you can tailor your efforts to what's ahead.
GRADE-ADJUSTED PACE
Don’t run out of steam before the activity is over. After configuring your data fields in the running activity, understand how to adjust your pace over varying terrain to perform according to your plan.
TRAINING STATUS
Using new indicators such as HRV status, your recent exercise history and performance, get an easy insight into your overall effort — and whether you're training productively, peaking or strained.
ACUTE LOAD
See your training history, and compare the intensity of your recent workouts to the optimal range to help improve your fitness.
TRAINING EFFECT
See how your workouts influence your endurance, speed and power with aerobic and anaerobic training effect feedback.
PERFORMANCE CONDITION
While you run, get an analysis of your pace and heart rate for a real-time assessment of your current ability to perform.
COURSES
Create or find existing courses in the Garmin Connect app, so you'll never run out of places to run. Or plan one on other platforms such as Strava and Komoot, then automatically sync them to your Forerunner.
TRACK RUNNING
Record accurate lap distances and see your distances in metres – even on a track you’ve never run before with a database with more than 10,000 tracks (400 metres) from all over the world.
VISUAL RACE PREDICTOR
Based on your running history and overall fitness level, get an estimate of what your pace could be for a 5K, 10K — or even a marathon. Plus, trend data highlights your training's impact over time.
CROSS-TRAINING
Mix up your training with different types of workouts. Download free HIIT, strength, cardio, yoga and Pilates workouts to your watch, from the Garmin Connect app.
TARGETED ADAPTIVE COACHING
View your entire week of daily suggested cycling workouts directly on your smartwatch — which adapt to match your performance and the demands of upcoming events in your Garmin Connect™ smartphone app calendar.
WRIST-BASED HEART RATE
The watch constantly samples your heart rate2 with our latest-generation heart rate sensor and will alert you if it stays too high or too low while you're at rest. It also helps gauge how hard you work during activities — even while swimming.
BODY BATTERY™ ENERGY MONITORING
See your energy levels throughout the day so you’ll know when your body is charged up and ready for activity or drained and needing to recharge with restful sleep. And get even more details and personal insights on how sleep, naps, daily activities and high stress specifically impact your energy2.
SLEEP COACH
Get personalised coaching for how much sleep you need and tips on how you can improve. Use this guidance to find the right balance between challenging activities and your body’s natural recovery process2.
PULSE OX SENSOR
This wrist-based pulse ox sensor3 monitors blood oxygen saturation levels to support advanced sleep monitoring and altitude acclimation.
WOMEN'S HEALTH TRACKING
Use the Garmin Connect app to track your menstrual cycle or pregnancy. Log symptoms, get exercise and nutrition education, and more. Even see and log details on your wrist with the Women's Health Tracking app
INTENSITY MINUTES
Our intensity minutes feature tells you when during the day you earned them and during what activity.
STRESS TRACKING
Find out if you're having a calm, balanced or stressful day. Relax reminders will even prompt you to do a short breathing activity when the watch detects that you're feeling stressed.
HEALTH SNAPSHOT™ FEATURE
Log a 2-minute session to record key stats, including heart rate2, heart rate variability, Pulse Ox3, respiration and stress. Then generate a report with those stats to share via the Garmin Connect app on your compatible smartphone.