| General | |
| 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 | Yes |
| 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 with music: Up to 6.5 hours All-Systems GNSS mode: Up to 25 hours All-Systems GNSS mode plus Multi-Band:Up to 16 hours |
| Memory/History | 4 GB |
| Clock Features | |
| Time/Date | Yes |
| GPS Time Sync | Yes |
| Automatic Daylight Saving Time | Yes |
| Alarm Clock | Yes |
| Timer | Yes |
| Stopwatch | Yes |
| Sunrise/Sunset Times | Yes |
| Health Monitoring | |
| Wrist-Based Heart Rate (constant, every second) | Yes |
| Daily Resting Heart Rate | Yes |
| Abnormal Heart Rate Alerts | Yes (high and low) |
| Respiration Rate (24X7) | Yes |
| Pulse Ox Blood Oxygen Saturation | yes (spot-check, and optional all-day acclimation and in sleep) |
| Fitness Age | Yes |
| Body Battery Energy Monitor | Yes |
| All-Day Stress | Yes |
| Relaxation Reminder | Yes |
| Relaxation Breathing Timer | Yes |
| Sleep | Yes (advanced) |
| Sleep Score and Insights | Yes |
| Hydration | Yes (in Garmin Connect and optional Connect IQ widget) |
| Woman's Health | Yes (in Garmin Connect and optional Connect IQ widget) |
| Health Snapshot | Yes |
| Sensors | |
| GPS | Yes |
| GLONASS | Yes |
| Galileo | Yes |
| Multi-Frequency Positioning | Yes |
| SATIQ Technology | Yes |
| Garmin Elevate Wrist Heart Rate Monitor | Yes |
| Barometric Altimeter | Yes |
| Compass | Yes |
| Gyroscope | Yes |
| Accelerometer | Yes |
| Thermometer | Yes |
| Pulse Ox Blood Oxygen Saturation Monitor | Yes |
| Daily Smart Features | |
| Connectivity | Bluetooth, ANT+, Wi-Fi |
| Connect IQ (Downloadable watch faces, data fields, widgets and apps) | Yes |
| On-Device Connect IQ Store | Yes |
| Smart Notifications | Yes |
| Text Response/Reject Phone Call with Text (Android only) | Yes |
| Morning Report | Yes |
| Calendar | Yes |
| Weather Forecast | Yes |
| Realtime Settings Sync with Garmin Connect Mobile | Yes |
| Battery Saver (Customizable Low Power Watch) | Yes |
| Controls Smartphone Music | Yes |
| Find My Phone | Yes |
| Find My Watch | Yes |
| VIRB Remote | Yes |
| Smart Trainer Control | Yes |
| Pairs with Garmin Connect Mobile | Yes |
| Smartphone Compatibility | iPhone and Android |
| Stocks | Yes (optional Connect IQ app) |
| Garmin Pay | Yes |
| LiveTrack | Yes |
| Live Event Sharing | Android Only |
| Incident Detection During Select Activities | Yes |
| Incident Detection Alert on Phone for Wearables | Yes |
| Assistance | Yes |
| Safety and Tracking Features | |
| Incident Detection During Select Activities | Yes |
| Incident Detection Alert on Phone For Werables | Yes |
| Assistance | Yes |
| Livetrack | Yes |
| Live Events Sharing | Android Only |
| Activity Tracking Features | |
| Step Counter | Yes |
| Auto Goal (learns your activity level and assigns a daily step goal) | Yes |
| Calories Burned | Yes |
| Floors Climbed | Yes |
| Distance Traveled | Yes |
| Intensity Minutes | Yes |
| TrueUp | Yes |
| Move IQ | Yes |
| Garmin Connect Challenges App | Yes (optional Connect IQ app) |
| Gym and Fitness Equipment | |
| Available Gym Activity Profiles | Strength, HIIT, Cardio and Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Pilates, Yoga |
| Strength Workouts | Yes |
| HIIT Workouts | Yes |
| Yoga Workouts | Yes |
| Pilates Workouts | Yes |
| On-Screen Workout Animations | Yes |
| On-Screen Workout Muscle Maps | Yes |
| Automatic Rep Counting | Yes |
| Training, Planning and Analysis Features | |
| HR Zones | Yes |
| HR Alerts | Yes |
| HR Calories | Yes |
| % HR Max | Yes |
| % HRR | Yes |
| Recovery Time | Yes |
| Auto Max HR | Yes |
| Race Glance/Widget | Yes |
| HRV Status | Yes |
| HR Broadcast (broadcasts HR data over ANT+ to paired devices) | Yes |
| Respiration Rate (During Exercise) | Yes (with compatible accessory) |
| GPS Speed and Distance | Yes |
| Customizable Data Pages | Yes |
| Customizable Activity Profiles | Yes |
| Auto Pause | Yes |
| Interval Training | Yes |
| Improved Interval (Includes open repeats, intervals data page, rest screen and auti detection) | Yes |
| Advanced Workouts | Yes |
| Downloadable Training Plans | Yes |
| HRM Running Page and Distance | Yes |
| Auto Lap | Yes |
| Manual Lap | Yes |
| Rest Timer | Yes |
| Configurable Lap Alerts | Yes |
| VO2 Max (Run) | Yes |
| VO2 Max (Trail Run) | Yes |
| Load Ratio | Yes |
| Training Status | Yes (improved) |
| Training Load | Yes |
| Training Load Focus | Yes |
| Training Effect | Yes |
| Training Effect (Anaerobic) | Yes |
| Primary Benefit (Training Effect Labels) | Yes |
| Improved Recovery Time | Yes |
| Daily Suggested Workouts | Yes (7 days) |
| Custom Alerts | Yes |
| Audio Prompts | Yes |
| Finish Time | Yes |
| Virtual Partner | Yes |
| Race an Activity | Yes |
| Auto Multisport Activities | Yes |
| Manual Multisport Activities | Yes |
| Course Guidance | Yes |
| Touch and/or Button Lock | Yes |
| Auto Scroll | Yes |
| Activity History on Watch | Yes |
| Physio TrueUp | Yes |
| Unfield Training Status | Yes |
| 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 | Yes |
| Running Dynamics | Yes |
| Vertical Oscillation and Ratio | Yes |
| Ground Contact Time and Balance | Yes |
| Stride Length (Real time) | Yes |
| Cadence (Provides real-time number of steps per minute) | Yes |
| Running Power | Yes |
| Grade-Adjusted Pace | Yes |
| Performance Condition | Yes |
| Lactate Threshold | Yes (with compatible accessory) |
| PacePro Pacing Strategies | Yes |
| Run Workouts | Yes |
| Trail Run Auto Climb | Yes |
| Race Predictor | Yes |
| Course - And Weather-Specific Race Predictor | Yes |
| Foot Pod Capable | Yes |
| Run/Walk/Stand Detection | Yes |
| Outdoor Recreation | |
| Available Outdoor Recreation Profiles | Hiking, Skiing, Snowboarding, XC Classic Skiing, Stand Up Paddleboarding, Rowing, Tennis, Padel, Pickleball |
| Sport Profiles | American Football, Field Hockey, Ice Hockey, Soccer/Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball, Basketball, Volleyball |
| Point-to-Point Navigation | Yes |
| Bread Crumb Trail in Real Time | Yes |
| Back to Start | Yes |
| TracBack | Yes |
| UltraTrac Mode | Yes |
| UP AHEAD | Yes |
| Elevation Profile | Yes |
| Distance to Destination | Yes |
| Barometric Trend Indicator with Storm Alert | Yes |
| Vertical Speed | Yes |
| Total Ascent/Descent | Yes |
| Auto Rest | Yes |
| Future Elevation Plot | Yes |
| Projected Waypoint | Yes |
| Sun and Moon Information | Yes |
| Cycling Features | |
| Available Cycling Profiles | Biking, Indoor Biking, Mountain Biking, eBiking, eMountain Biking |
| Courses | Yes |
| Bike Lap and Lap Maximum Power (with Power Sensor) | Yes |
| Race an Activity | Yes |
| Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories) | Yes |
| FTP (Funtional Threshold Power) | Yes |
| Compatible with Varia Vision (Head-Mounted Display) | Yes |
| Compatible with Varia Radar (Rear-Facing Radar) | Yes |
| Speed and Cadence Sensor Support (with Sensor) | Yes |
| Power Meter Compatible | Yes |
| 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) | Yes |
| Pool Swim Metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories) | Yes |
| Stroke Type Detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only) | Yes |
| Drill Logging (pool swim only) | Yes |
| Basic Rest Timer (up from 0) (pool swim only) | Yes |
| "Repeat On" Rest Timer (pool swim only) | Yes |
| Auto Rest (pool swim only) | Yes |
| Time and Distance Alerts | Yes |
| Pacing Alerts (pool swim only) | Yes |
| Countdown Start (pool swim only) | Yes |
| Pool Swim Workouts | Yes |
| Critical Swim Speed | Yes |
| Underwater Wrist-Based Heart Rate | Yes |
| 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) |
GARMIN Forerunner 255 Slate Gray Smartwatch (010-02641-00): product description
The GARMIN Forerunner 255 is a lightweight comfortable GPS running smartwatch that gives overview of your sleep, HRV status and daily workout with morning report. The watch uses wrist-based heart rate sensor to offer performance monitoring features, including evaluating current training status.
The Forerunner 255 Smartwatch gets you ready for your next race with training tips, personalized daily suggested workouts and completion time predictions based on course details, weather and performance. Utilize a full suite of advanced metrics and training tools to reach your goals.
The Forerunner 255 helps create your own custom workouts on Garmin Connect online fitness community. The watch constantly samples your heart rate with their latest-generation heart rate sensor and will alert you if it stays too high or too low while you're at rest.
The Garmin Forerunner 255 Smartwatch provides a long battery life up to 14 days in smartwatch mode and up to 30 hours in GPS mode. With the Forerunner 255 you can receive smart notifications, track your runs with the LiveTrack feature and customize with free watch faces, apps and more from Connect IQ store.
Smartwatches details:
