General | |
---|---|
Brand
The brand of the smartwatch
|
Garmin |
Manufacturer
The company that manufactures the watch
|
Garmin Ltd. |
Model Name
The model name of the smartwatch
|
Forerunner 255S |
Product Type
Type or category of the product
|
GPS Running Smartwatch |
Series Name
The series to which the model belongs
|
Forerunner |
Categorization | |
Product Category
The general category of the product
|
Wearable Technology |
Subcategory
A more specific category under the main one
|
Running Smartwatch |
Department
The store or organizational department
|
Electronics |
Industry
The industry sector the product belongs to
|
Consumer Electronics |
Design and Build | |
Case Material
Material used for the watch case
|
Fiber-reinforced polymer |
Bezel Material
Material used for the bezel
|
Fiber-reinforced polymer |
Lens Material
Material of the watch lens
|
Corning Gorilla Glass 3 |
Band Material
Material of the watch band
|
Silicone |
Interchangeable Bands
Ability to swap out bands
|
Yes (Quick Release bands, 18 mm, industry standard) |
Band Width
The width of the watch band
|
0.71 inches (18 mm) |
Case Dimensions (L x W x H)
Physical dimensions of the watch case
|
1.61 x 1.61 x 0.49 in (41 x 41 x 12.4 mm) |
Case Shape
Shape of the watch case
|
Round |
Water Resistance Rating
Depth to which the watch is water-resistant
|
5 ATM (up to 50 meters/164 feet) |
Design Features
Special design aspects of the watch
|
Lightweight design, sweat-ready materials, easy-to-use buttons, durable Corning Gorilla Glass 3 lens |
Display | |
Display Type
Type of display used
|
Sunlight-visible, transflective memory-in-pixel (MIP) |
Display Size (Diagonal Measurement)
Size of the display screen
|
1.1 inches (27.5 mm) |
Display Resolution
Pixel resolution of the display
|
218 x 218 pixels |
Color Display
Whether the display is in color
|
Yes |
Large Font Option
Supports large font option
|
Yes |
Screen Shape
Shape of the display screen
|
Round |
Customizable Watch Faces
Ability to change watch face designs
|
Yes (via Connect IQ Store) |
Physical Attributes | |
Dimensions
Overall size dimensions
|
1.61 x 1.61 x 0.49 in (41 x 41 x 12.4 mm) |
Weight
The weight of the smartwatch
|
1.4 oz (39 g) |
Wrist Size Range
Fits wrists with specified circumference
|
4.33 to 6.89 inches (110 to 175 mm) |
Shape
The physical shape
|
Round |
User Interface | |
Button Operation
Physical buttons for control
|
Yes |
Control Method
Control features using buttons
|
Button-based interface |
Battery and Power | |
Battery Type
Type of battery used in the smartwatch
|
Internal rechargeable lithium-ion battery |
Smartwatch Mode
Battery life in smartwatch mode
|
Up to 12 days |
GPS-only GNSS Mode
Battery life in GPS-only GNSS mode
|
Up to 26 hours |
All-Systems GNSS Mode
Battery life in All-Systems GNSS mode
|
Up to 20 hours |
All-Systems GNSS + Multi-Band Mode
Battery life in All-Systems GNSS mode plus Multi-Band
|
Up to 13 hours |
Charging Method
Charging method for the watch
|
Garmin proprietary plug charger |
User-Replaceable Battery
Whether the battery can be replaced by the user
|
No |
Sensors and Components | |
GPS
Built-in GPS receiver
|
Yes |
GLONASS
Supports GLONASS satellites
|
Yes |
Galileo
Supports Galileo satellites
|
Yes |
SatIQ Technology
Uses SatIQ Technology for positioning
|
Yes |
Garmin Elevate Wrist Heart Rate Monitor
Measures heart rate at the wrist
|
Yes |
Pulse Ox Sensor
Measures blood oxygen saturation
|
Yes |
Barometric Altimeter
Measures altitude changes
|
Yes |
Compass
Built-in compass sensor
|
Yes |
Gyroscope
Detects movement and orientation
|
Yes |
Accelerometer
Measures acceleration
|
Yes |
Thermometer
Measures ambient temperature
|
Yes |
Connectivity | |
Bluetooth Connectivity
Supports Bluetooth connections
|
Yes |
ANT+ Connectivity
Supports ANT+ connections
|
Yes |
Wireless Protocols
Wireless protocols supported
|
Bluetooth®, ANT+® |
Memory and Storage | |
Internal Memory Capacity
Amount of internal storage
|
4 GB |
Smart Features | |
Smartphone Notifications
Receives smartphone notifications
|
Yes |
Text Response/Reject Call with Text
Allows text response and call rejection with text
|
Yes (Android only) |
View Images from Notifications
View images from notifications on watch
|
Yes (Android only) |
Mobile Payments
Supports Garmin Pay contactless payments
|
Yes (Garmin Pay) |
Music Controls
Controls smartphone music
|
Yes |
Connect IQ Store Access
Downloadable watch faces, data fields, widgets and apps
|
Yes |
Morning Report
Morning report feature
|
Yes |
Calendar
Calendar integration
|
Yes |
Weather Forecasts
Provides weather forecasts
|
Yes |
Battery Saver Mode
Battery saver mode
|
Yes (customizable low power watch) |
Find My Phone
Find My Phone feature
|
Yes |
Find My Watch
Find My Watch feature
|
Yes |
Garmin Messenger App Compatibility
Compatible with Garmin Messenger app
|
Yes |
VIRB Remote
VIRB Remote control
|
Yes |
Pairs with Garmin Connect Mobile
Pairs with Garmin Connect Mobile
|
Yes |
Compatible Operating Systems
Smartphone compatibility
|
iPhone® and Android™ |
Stocks
Supports Stocks app
|
Yes (optional Connect IQ app) |
Garmin Share
Garmin Share feature
|
Yes |
Health and Fitness Tracking | |
Heart Rate Monitoring
Measures heart rate
|
Yes |
Daily Resting Heart Rate
Tracks daily resting heart rate
|
Yes |
Abnormal Heart Rate Alerts
Provides abnormal heart rate alerts
|
Yes (high and low) |
Respiration Rate Monitoring
Monitors respiration rate 24x7
|
Yes |
Fitness Age
Estimates fitness age
|
Yes |
Body Battery Energy Monitor
Monitors energy levels
|
Yes |
All-day Stress Monitoring
Tracks all-day stress
|
Yes |
Relaxation Reminders
Provides relaxation reminders
|
Yes |
Relaxation Breathing Timer
Provides relaxation breathing timer
|
Yes |
Advanced Sleep Monitoring
Advanced sleep monitoring
|
Yes |
Sleep Coach
Provides sleep coach feature
|
Yes |
Nap Detection
Automatically detects naps
|
Yes |
Hydration Tracking
Tracks hydration
|
Yes (in Garmin Connect and optional Connect IQ widget) |
Women's Health Tracking
Women's health tracking
|
Yes (in Garmin Connect and optional Connect IQ widget) |
Health Snapshot Feature
Generates health snapshot
|
Yes |
Safety and Tracking Features | |
Incident Detection
Incident detection during select activities
|
Yes |
Assistance
Assistance feature sends SOS message
|
Yes |
LiveTrack
LiveTrack allows others to follow your activities
|
Yes |
Live Event Sharing
Live Event Sharing
|
Yes (Android only) |
Activity Tracking Features | |
Step Counter
Counts the number of steps taken
|
Yes |
Auto Goal
Automatically adjusts daily step goal
|
Yes |
Calories Burned
Estimates calories burned
|
Yes |
Floors Climbed
Tracks floors climbed
|
Yes |
Distance Traveled
Measures distance traveled
|
Yes |
Intensity Minutes
Tracks intensity minutes
|
Yes |
TrueUp
Syncs data across devices
|
Yes |
Move IQ
Automatically detects activity type
|
Yes |
Performance Metrics | |
VO2 Max Estimation
Provides VO2 Max estimate
|
Yes |
Training Status
Tracks training status
|
Yes (improved) |
Training Readiness
Offers training readiness score
|
Yes |
Recovery Time
Provides recovery time advice
|
Yes |
Training Effect
Provides training effect feedback
|
Yes |
Training Load Focus
Provides training load focus
|
Yes |
PacePro Technology
Includes PacePro pacing strategies
|
Yes |
Grade-Adjusted Pace
Calculates grade-adjusted pace
|
Yes |
Performance Condition
Provides performance condition
|
Yes |
Race Predictor
Offers race predictor
|
Yes |
Software and Compatibility | |
Compatible Operating Systems
Compatible operating systems
|
iPhone and Android |
Companion App
Dedicated app for watch management
|
Garmin Connect Mobile app |
Software Updates
Supports software updates
|
Yes |
Third-Party App Compatibility
Supports third-party apps
|
Yes |
Environmental Specifications | |
Water Rating
Water resistance rating
|
5 ATM (up to 50 meters/164 feet) |
Hardware Specifications | |
Firmware Update Capability
Can receive firmware updates
|
Yes |
Packaging and Shipping | |
Package Contents
Items included in the box
|
Garmin Forerunner 255S watch, charging/data cable, documentation |
Warranty and Support | |
Warranty Type
Type of warranty offered
|
Manufacturer's Warranty |
Warranty Period
Duration of the warranty
|
1 year |
- Built-in triathlon feature
- Acute load workout comparison
- Adaptive cycling coaching
- Daily suggested workouts
- 12 days battery in smartwatch mode
- 26 hours battery in GPS mode
- 30+ activity profiles
- Garmin Pay contactless payments
- Sleek 1.4 oz design
- Morning report on health stats
- 30+ built-in sports apps
- Race adaptive training plans
- Recovery time advisor
- PacePro technology
- Grade-adjusted pace metrics
- Courses feature for running routes
- Track running accuracy
- Visual race predictor
- Cross-training options
- Wrist-based heart rate monitoring
- Body Battery energy monitoring
- Sleep coaching insights
- Pulse Ox sensor
- Womens health tracking
- Intensity minutes monitoring
- Stress tracking with reminders
- Health Snapshot feature
- Multi-band GPS with SatIQ
- Smart notifications
- Safety and incident detection
- LiveTrack for real-time location
- Integrates with Garmin Connect
- Connect IQ Store access
- HRV status for recovery insights
- Nap detection utility
- Performance condition analysis
- Training effect insights
- Wrist-based running power
- Training status indicators
- Wrist-based running dynamics
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