Garmin Forerunner 255 46mm Smartwatch - Slate Grey | 010-02641-10
Garmin Forerunner 255 46mm Smartwatch - Slate Grey | 010-02641-10
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.
RACE WIDGET
Get ready for your next race with training tips, personalised daily suggested workouts and completion time predictions based on course details, weather and performance.
DAILY SUGGESTED WORKOUTS
View your entire week of daily suggested workouts, which adapt after every run to match your performance and recovery as well as the races coming up in your Garmin Connect™ smartphone app calendar.
GARMIN COACH
Free adaptive training plans include 5K, 10K and half-marathon programmes, featuring guidance from expert coaches that adapt to you and your goals.
TRIATHLON AND MULTISPORT PROFILES
Switch between sports with one press by using built-in profiles for triathlons, duathlons, brick workouts and swimruns. Or, create your own custom multisport profiles.
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.
RUNNING DYNAMICS
When using a Running Dynamics Pod or HRM-Pro heart rate monitor, the Forerunner 255 running watch measures crucial running metrics such as cadence, stride length, ground contact time and balance, and more — while comparing to others in the Garmin Connect app.
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
Ready for some speedwork? Input your lane on the built-in track run activity to record accurate lap distances and see your distances in metres.
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. Free HIIT, strength, cardio, yoga and Pilates workouts come preloaded on the watch, and you can download more from the Garmin Connect app.
Specification | |
| LENS MATERIAL | Corning® Gorilla® Glass 3 |
|---|---|
| BEZEL MATERIAL | Fibre-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 |
| WATER RATING | 5 ATM |
| 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 |
| CHARGING METHOD | Garmin proprietary plug charger |
| 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) | |
| 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 | |
| RELAXATION REMINDERS | |
| 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 | |
Sensors | |
| GPS | |
|---|---|
| GLONASS | |
| GALILEO | |
| MULTI-FREQUENCY POSITIONING | |
| SATIQ™ TECHNOLOGY | |
| GARMIN ELEVATE™ WRIST HEART RATE MONITOR | |
| BAROMETRIC ALTIMETER | |
| COMPASS | |
| GYROSCOPE | |
| ACCELEROMETER | |
| THERMOMETER | |
| 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) | |
| CALENDAR | |
| WEATHER | |
| 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 | |
| STOCKS | Yes (optional Connect IQ app) |
| GARMIN PAY™ | |
Safety and tracking features | |
| LIVETRACK | |
|---|---|
| LIVE EVENT SHARING | Android™ Only |
| INCIDENT DETECTION DURING SELECT ACTIVITIES | |
| INCIDENT DETECTION ALERT ON PHONE FOR WEARABLES | |
| ASSISTANCE | |
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 | |
| TRUEUP™ | |
| MOVE IQ™ | |
| GARMIN CONNECT™ CHALLENGES APP | Yes (optional Connect IQ app) |
Fitness equipment/gym | |
| AUTOMATIC REP COUNTING | |
|---|---|
| STRENGTH WORKOUTS | |
| HIIT WORKOUTS | |
| YOGA WORKOUTS | |
| PILATES WORKOUTS | |
| ON-SCREEN WORKOUT ANIMATIONS | |
| ON-SCREEN WORKOUT MUSCLE MAP | |
Training, planning and analysis features | |
| HR ZONES | |
|---|---|
| HR ALERTS | |
| HR CALORIES | |
| HR MAX | |
| HRR | |
| 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 | |
| HRM RUNNING PACE AND DISTANCE | |
| AUTO LAP® | |
| MANUAL LAP | |
| REST TIMER | |
| CONFIGURABLE LAP ALERTS | |
| VO2 MAX (RUN) | |
| VO2 MAX (TRAIL RUN) | |
| TRAINING STATUS | Improved |
| TRAINING LOAD | |
| TRAINING LOAD FOCUS | |
| TRAINING EFFECT | |
| 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 | |
| MULTI-SPORT | |
| COURSE GUIDANCE | |
| TOUCH AND/OR BUTTON LOCK | |
| AUTO SCROLL | |
| ACTIVITY HISTORY ON WATCH | |
| PHYSIO TRUEUP | |
| UNIFIED TRAINING STATUS | |
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 | |
| 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 | |
| GRADE-ADJUSTED PACE | |
| PERFORMANCE CONDITION | |
| LACTATE THRESHOLD | Yes (with compatible accessory) |
| PACEPRO™ PACING STRATEGIES | |
| RUN WORKOUTS | |
| TRAIL RUN AUTO CLIMB | |
| RACE PREDICTOR | |
| COURSE- AND WEATHER-SPECIFIC RACE PREDICTOR | |
| FOOT POD CAPABLE | |
| RUN/WALK/STAND DETECTION | |
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 | |
| TRACBACK® | |
| ULTRATRAC MODE | |
| UP AHEAD | |
| ELEVATION PROFILE | |
| DISTANCE TO DESTINATION | |
| BAROMETRIC TREND INDICATOR WITH STORM ALERT | |
| VERTICAL SPEED | |
| TOTAL ASCENT/DESCENT | |
| AUTO REST | |
| 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) | |
| COURSES | |
| 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, HRM-Pro or HRM-Pro Plus) |
Kid activity tracking features | |
| TOE-TO-TOE™ CHALLENGES APP | Yes (optional Connect IQ Toe-to-Toe™ Challenges app) |
|---|---|
| Colour: | Grey |
|---|
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