GARMIN Forerunner 55

General
LENS MATERIAL Chemically strengthened glass
QUICK RELEASE BANDS Yes (20 mm, Industry standard)
STRAP MATERIAL Silicone
PHYSICAL SIZE 42 x 42 x 11.6 mm
Fits wrists with a circumference of 126-203 mm
COLOUR DISPLAY
DISPLAY SIZE 1.04″ (26.3 mm) diameter
DISPLAY RESOLUTION 208 x 208 pixels
DISPLAY TYPE Sunlight-visible, transflective memory-in-pixel (MIP)
WEIGHT 37 g
BATTERY LIFE Smartwatch mode: Up to 2 weeks
GPS mode: Up to 20 hours
See details
WATER RATING 5 ATM
MEMORY/HISTORY 200 hours of activity data

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)
FITNESS AGE
BODY BATTERY™ ENERGY MONITOR
ALL-DAY STRESS TRACKING
RELAXATION REMINDERS
RELAXATION BREATHING TIMER
SLEEP Yes (Advanced)
HYDRATION Yes (in Garmin Connect™ and optional Connect IQ™ widget)
WOMEN'S HEALTH

Sensors
GPS
GLONASS
GALILEO
GARMIN ELEVATE™ WRIST HEART RATE MONITOR
ACCELEROMETER

Daily smart features
CONNECTIVITY Bluetooth®, ANT+®
CONNECT IQ™ (DOWNLOADABLE WATCH FACES, DATA FIELDS, WIDGETS AND APPS)
SMART NOTIFICATIONS
CALENDAR
WEATHER
CONTROLS SMARTPHONE MUSIC
FIND MY PHONE
FIND MY WATCH
SMARTPHONE COMPATIBILITY iPhone®, Android™
COMPATIBLE WITH GARMIN CONNECT™ MOBILE

Safety and tracking features
LIVETRACK
LIVE EVENT SHARING Android™ Only
INCIDENT DETECTION DURING SELECT ACTIVITIES
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
DISTANCE TRAVELLED
INTENSITY MINUTES
TRUEUP™
MOVE IQ™

Fitness equipment/gym
AVAILABLE GYM ACTIVITY PROFILES Cardio and Elliptical Training, Stair Stepping, HIIT, Pilates, Yoga

Training, planning and analysis features
HR ZONES
HR ALERTS
HR CALORIES
RECOVERY TIME
AUTO MAX HR
HR BROADCAST (BROADCASTS HR DATA OVER ANT+™ TO PAIRED DEVICES)
RESPIRATION RATE (DURING EXERCISE) Yoga and breathwork only
GPS SPEED AND DISTANCE
CUSTOMISABLE SCREEN(S)
CUSTOMISABLE ACTIVITY PROFILES
AUTO PAUSE®
INTERVAL TRAINING
ADVANCED WORKOUTS
DOWNLOADABLE TRAINING PLANS
AUTO LAP®
MANUAL LAP
CONFIGURABLE LAP ALERTS
VO2 MAX (RUN)
IMPROVED RECOVERY TIME Yes (limited)
DAILY SUGGESTED WORKOUTS Yes (limited)
AUDIO PROMPTS
FINISH TIME
TOUCH AND/OR BUTTON LOCK
ACTIVITY HISTORY ON WATCH
PHYSIO TRUEUP

Running features
AVAILABLE RUN PROFILES Running, Treadmill Running, Track Running, Indoor Track Running, Virtual Running
GPS-BASED DISTANCE, TIME AND PACE
CADENCE (PROVIDES REAL-TIME NUMBER OF STEPS PER MINUTE)
PACEPRO™ PACING STRATEGIES
RUN WORKOUTS
RACE PREDICTOR
FOOT POD CAPABLE
Outdoor recreation
AREA CALCULATION Yes (via Connect IQ™)
HUNT/FISH CALENDAR Yes (via Connect IQ™)
SUN AND MOON INFORMATION Yes (via Connect IQ™)

Cycling features
AVAILABLE CYCLING PROFILES Biking, Indoor Biking
ALERTS (TRIGGERS ALARM WHEN YOU REACH GOALS INCLUDING TIME, DISTANCE, HEART RATE OR CALORIES)
SPEED AND CADENCE SENSOR SUPPORT (W/SENSOR)

Swimming features
AVAILABLE SWIM PROFILES Pool Swimming
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
COUNTDOWN START
UNDERWATER WRIST-BASED HEART RATE

Kid activity tracking features
TOE-TO-TOE™ CHALLENGES APP Yes (optional Connect IQ Toe-to-Toe™ Challenges app)