Garmin Forerunner 255 Running Smartwatch Elevate your fitness journey with the Garmin Forerunner 255, the ultimate GPS running smartwatch designed for athletes who demand precision and performance. Whether you are training for your first 5K or a competitive triathlon, this lightweight, durable watch provides advanced training metrics, recovery insights, and comprehensive health monitoring to help you reach your peak. With up to 14 days of battery life, built-in multi-band GPS, and over 30 activity profiles, it is the perfect companion for runners, cyclists, and swimmers alike. Advanced Training Metrics: Get personalized morning reports, HRV status, and daily suggested workouts. Long-Lasting Battery: Enjoy up to 14 days in smartwatch mode and 30 hours in GPS mode. Lightweight & Durable: Sleek design with Corning Gorilla Glass 3 and a comfortable silicone band. Multi-Sport Ready: Includes triathlon features and 30+ activity profiles for versatile training. Smart Connectivity: Stay connected with smart notifications and make quick purchases with Garmin Pay. #GarminForerunner255 #RunningWatch #FitnessTracker #TriathlonTraining #Smartwatch What’s in the box? 1 x Forerunner 2551 x Charge/data cable1 x Documentation Specifications GENERAL Lens Material: Corning Gorilla Glass 3 Bezel Material: fiber-reinforced polymer Quick Release Bands: yes (22mm, 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” (33mm) diameter Display Resolution: 260 x 260 pixels Display Type: sunlight-visible, transflective memory-in-pixel (MIP) Weight: 49g Water Rating: 5 ATM 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 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 (high and low), respiration rate (24/7), pulse Ox blood oxygen saturation (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 (advanced), sleep score and insights, hydration (in Garmin Connect and optional Connect IQ widget), women’s health (in Garmin Connect and optional Connect IQ widget), health snapshot. SENSORS GPS, GLONASS, Galileo, Multi-Frequency positioning, SATIQ technology, Garmin Elevate wrist heart rate monitor, barometric altimeter, compass, gyroscope, accelerometer, thermometer, pulse Ox blood oxygen saturation monitor. DAILY SMART FEATURES Bluetooth, 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), calendar, weather, realtime settings sync with Garmin Connect Mobile, battery saver (customizable low power watch), controls smartphone music, Find My Phone, VIRB remote, iPhone and Android compatible, pairs with Garmin Connect Mobile, Garmin Pay SAFETY AND TRACKING FEATURES Livetrack, live event sharing (on Android only), incident detection during select activities, incident detection alert on phone for wearables, assistance ACTIVITY TRACKING FEATURES Step counter, move bar, auto goal, calories burnt, floors climbed, distance traveled, intensity minutes, TrueUp, Move IQ, Garmin Connect Challenges app (optional Connect IQ app) GYM & FITNESS EQUIPMENT Automatic rep counting, gym activity profiles (Strength, HIIT, Cardio and Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Pilates, Yoga), strength workouts, hit workouts, yoga workouts, pilates workouts, on-screen workout animations and on-screen workout muscle maps. TRAINING, PLANNING AND ANALYSIS FEATURES HR Zones, HR Alerts, HR Calories, %HR Max, % HRR, recovery time, auto max HR, morning report, race widget, HRV status, HR broadcast (over ANT+ to paired devices), respiration rate during exercise (with compatible accessory), GPS speed and distance, customizable data pages, customizable activity profiles, auto pause, interval training, improved interval, advanced workouts, downloadable training plans, HRM running pace and distance, auto lap, manual lap, rest timer, configurable lap alerts, VO2 max (run & trail run), training status (improved), training load, training load focus, training effect (+anaerobic), primary benefit (training effect labels), improved recovery time, daily suggested workouts (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 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 (with compatible accessory), vertical oscillation and ratio (with compatible accessory), ground contact time and balance (with compatible accessory), real time stride length (with compatible accessory), real-time cadence, running power (with compatible accessory), grade-adjusted pace, performance condition, lactate threshold (with compatible accessory), PacePro pacing strategies, run workouts, trail run auto climb, race predictor, course- and weather- specific race predictor, foot pod capable, run/walk/stand detection OUTDOOR RECREATION 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 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, functional threshold power (with compatible accessory), compatible with Varia vision/radar/lights, speed and cadence sensor support (with sensor) SWIMMING FEATURES Swim profiles (Pool Swimming, Open Water Swimming)Open-water swim: metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency, calories)Pool swim: metrics (lengths, distance, pace, stroke count, swim efficiency, calories), stroke type detection (freestyle, backstrocke, breaststroke, butterfly), drill logging, basic rest timer, “repeat on” rest timer, auto rest, pacing alerts, countdown start, pool swim workoutsBoth: time and distance alerts, critical swim speed, underwater wrist-based heart rate, heart rate from external HRM (with HRM-Swim, HRM-Pro or HRM-Pro Plus) KID ADCTIVITY TRACKING FEATURES Toe-to-toe Challenges App (optional Connect IQ Toe-to-Toe™ Challenges app) CONNECTIVITY Smart Trainer Control