GARMIN FORERUNNER 55

General
Lens Material - chemically strengthened glass
Quick Release bands - (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
Color 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
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    (high and low)
Respiration rate (24x7)     
Fitness Age     
Body Battery Energy Monitor     
All-day Stress     
Relaxation reminders     
Relaxation breathing timer     
Sleep    (Advanced)
Hydration    (in Garmin Connect and optional Connect IQ widget)
Woman'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
Pairs 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 traveled     
Intensity minutes     
TrueUp     
Move IQ     
Gym & Fitness Equipment
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     
Customizable data pages     
Customizable activity profiles     
Auto Pause®     
Interval training     
Advanced workouts     
Downloadable training plans     
Auto Lap®     
Manual lap     
Configurable lap alerts     
VO2 Max (Run)     
Improved recovery time    (limited)
Daily suggested workouts    (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     
Cycling Features
Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories)     
Available cycling profiles    
Biking, Indoor Biking
Speed and cadence sensor support     
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 (pool swim only)     
Underwater wrist-based heart rate     
Kid Activity Tracking Features
Toe-to-Toe Challenges app    (optional Connect IQ app)