GARMIN FORERUNNER 255 SLATE GRAY

GARMIN FORERUNNER 255 SLATE GRAY

Specifications

• 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
  
• COLOR 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
  
• 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)
• 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
• GARMIN ELEVATE™ WRIST HEART RATE MONITOR
• BAROMETRIC ALTIMETER
• COMPASS
• GYROSCOPE
• ACCELEROMETER
• AMBIENT LIGHT SENSOR
• THERMOMETER
• PULSE OX BLOOD OXYGEN SATURATION MONITOR
   
  Daily Smart Features
• CONNECTIVITY: Bluetooth® Smart and 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)
• CONNECTED GPS
• CALENDAR
• WEATHER
• REALTIME SETTINGS SYNC WITH GARMIN CONNECT™ MOBILE
• BATTERY SAVER (CUSTOMIZABLE LOW POWER WATCH)
• CONTROLS SMARTPHONE MUSIC
• FIND MY PHONE
• FIND MY WATCH
• VIRB® REMOTE
• SMARTPHONE COMPATIBILITY: iPhone®, Android™
• PAIRS WITH GARMIN CONNECT™ MOBILE
• GARMIN PAY™
  
  Safety and Tracking Features
• LIVETRACK
• LIVE EVENT SHARING: Android™ Only
• INCIDENT DETECTION DURING SELECT ACTIVITIES
• ASSISTANCE
  
  Activity Tracking Feature
• 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 TRAVELED
• INTENSITY MINUTES
• TRUEUP™
• MOVE IQ™
• 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
  
• 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
• % 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
• CUSTOMIZABLE DATA PAGES
• CUSTOMIZABLE 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: 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)
• CUSTOM ALERTS
• AUDIO PROMPTS
• FINISH TIME 
• VIRTUAL PARTNER
• RACE AN ACTIVITY
• AUTO MULTISPORT ACTIVITIES
• MANUAL 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
• TRAIL RUN AUTO CLIMB
• 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 CRUMB TRAIL 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
• 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 ONLY)
• 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)
  
  Connectivity
• SMART TRAINER CONTROL