NewNew(41 mm) Designed for performance with advanced fitness from Fitbit.(45 mm) Designed for performance in a larger size and display with advanced fitness from Fitbit.Personalised help for your health and fitness, safety and productivity.Get useful tools to manage your stress, sleep better and gain healthier habits.Keep up with your fitness goals and get insightful results from your workout routines.Supercharge your workouts.Do what you love and feel your best.ColourCase size and material41 mm roundAluminium case45 mm roundAluminium case41 mm roundAluminium case40.5 x 40.5 x 11.2 mmAluminium case40.5 x 40.5 x 11.2 mmAluminium case36.73 x 23.09 x 11.20 mmAluminium case39.32 x 18.6 x 11.75 mmPlastic caseDisplayActua display16% smaller bezelCustom AMOLED LTPO display with DCI-P3 colourUp to 2,000 nits (peak brightness)Corning® Gorilla® Glass 5Actua display16% smaller bezelCustom AMOLED LTPO display with DCI-P3 colourUp to 2,000 nits (peak brightness)Corning® Gorilla® Glass 5––Custom AMOLED display with DCI-P3 colourBrightness boost up to 1,000 nitsCorning® Gorilla® Glass 5––AMOLED display–Corning® Gorilla® Glass 3––AMOLED display–Corning® Gorilla® Glass 3––AMOLED display–Corning® Gorilla® Glass 3––AMOLED display–Corning® Gorilla® Glass 3Phone OS compatibilityAndroid 10.0 or newer–Android 10.0 or newer–Android 9.0 or newer–Android 10.0 or neweriOS 14.0 or newerAndroid 10.0 or neweriOS 14.0 or newerAndroid 10.0 or neweriOS 14.0 or newerAndroid 10.0 or neweriOS 14.0 or newerFitness trackingRun workout builderReal-time run guidanceDaily run recommendationsAdvanced run form tracking (in app)Run performance dashboard (in app)Cardio load,Target cardio load,Morning briefAll-day activity trackingAuto Workout mode40+ exercise modesHeart Zone TrainingPace TrainingEnhanced workout viewsActive Zone MinutesDaily Readiness ScoreCardio fitness scoreHeart rate on exercise equipment,Workouts on your phoneStep trackingCalorie trackingGoals and remindersFloors climbedSwimmingRun workout builderReal-time run guidanceDaily run recommendationsAdvanced run form tracking (in app)Run performance dashboard (in app)Cardio load,Target cardio load,Morning briefAll-day activity trackingAuto Workout mode40+ exercise modesHeart Zone TrainingPace TrainingEnhanced workout viewsActive Zone MinutesDaily Readiness ScoreCardio fitness scoreHeart rate on exercise equipment,Workouts on your phoneStep trackingCalorie trackingGoals and remindersFloors climbedSwimming––––––––All-day activity trackingAuto Workout mode40+ exercise modesHeart Zone TrainingPace TrainingEnhanced workout viewsActive Zone MinutesDaily Readiness ScoreCardio fitness score–Workouts on your phoneStep trackingStep trackingGoals and remindersFloors climbedSwimming––––––––All-day activity trackingSmartTrack™ automatic exercise tracking (in mobile app only)40+ exercise modes–––Active Zone MinutesDaily Readiness ScoreCardio fitness score–Workouts on your phoneStep trackingCalorie trackingGoals and remindersFloors climbedSwim laps––––––––All-day activity trackingSmartTrack™ automatic exercise tracking (in mobile app only)20 exercise modes–––Active Zone MinutesDaily Readiness ScoreCardio fitness score–Workouts on your phoneStep trackingCalorie trackingGoals and remindersFloors climbedSwim laps––––––––All-day activity trackingSmartTrack™ automatic exercise tracking (in mobile app only)40+ exercise modes–––Active Zone MinutesDaily Readiness ScoreCardio fitness scoreHeart rate on exercise equipmentWorkouts on your phoneStep trackingCalorie trackingGoals and reminders–Swim laps––––––––All-day activity trackingSmartTrack™ automatic exercise tracking (in mobile app only)20 exercise modes–––Active Zone MinutesDaily Readiness ScoreCardio fitness score–Workouts on your phoneStep trackingCalorie trackingGoals and reminders–Swim lapsHeart healthAdvanced heart rate trackingIrregular heart rhythm notificationsHigh and low heart rate notificationsECG app with AFib detectionAdvanced heart rate trackingIrregular heart rhythm notificationsHigh and low heart rate notificationsECG app with AFib detectionAdvanced heart rate trackingIrregular heart rhythm notificationsHigh and low heart rate notificationsECG app with AFib detectionContinuous heart rate monitoringIrregular heart rhythm notificationsHigh and low heart rate notificationsECG app for heart rhythm assessmentContinuous heart rate monitoringIrregular heart rhythm notificationsHigh and low heart rate notifications–Continuous heart rate monitoringIrregular heart rhythm notificationsHigh and low heart rate notificationsECG app for heart rhythm assessmentContinuous heart rate monitoringIrregular heart rhythm notificationsHigh and low heart rate notifications–Health metricsSkin temperature sensing,SpO2 nightly average, range, trends over timeHeart rate variabilityResting heart rateBreathing rate
Blood glucose tracking (in app only)Menstrual health tracking (in app only)Skin temperature sensing,SpO2 nightly average, range, trends over timeHeart rate variabilityResting heart rateBreathing rate
Blood glucose tracking (in app only)Menstrual health tracking (in app only)Skin temperature sensing,SpO2 nightly average, range, trends over timeHeart rate variabilityResting heart rateBreathing rate
Blood glucose tracking (in app only)Menstrual health tracking (in app only)Skin temperature sensorSpO2 (blood oxygen) trackingHeart rate variabilityResting heart rateBreathing rateBlood glucose tracking (in app only)Menstrual health tracking (in app only)Skin temperature variationSpO2 (blood oxygen) trackingHeart rate variabilityResting heart rateBreathing rateBlood glucose tracking (in app only)Menstrual health tracking (in app only)Skin temperature variationSpO2 (blood oxygen) trackingHeart rate variabilityResting heart rateBreathing rateBlood glucose tracking (in app only)Menstrual health tracking (in app only)Skin temperature variationSpO2 (blood oxygen) trackingHeart rate variabilityResting heart rateBreathing rateBlood glucose tracking (in app only)Menstrual health tracking (in app only)Stress monitoringAll-day body-response trackingStress notificationsStress Management ScoreStress management with EDA sensorsMood logging and reflectionsMindfulness contentGuided breathing sessionsAll-day body-response trackingStress notificationsStress Management ScoreStress management with EDA sensorsMood logging and reflectionsMindfulness contentGuided breathing sessionsAll-day body-response trackingStress notificationsStress Management ScoreStress management with EDA sensorsMood logging and reflectionsMindfulness contentGuided breathing sessionsAll-day body response trackingStress notificationsStress Management ScoreEDA Scan app for stress managementMood logging and reflectionsMindfulness contentGuided breathing sessions––Stress Management Score–Mood logging and reflectionsMindfulness contentGuided breathing sessions––Stress Management ScoreEDA Scan app for stress managementMood logging and reflectionsMindfulness content–––Stress Management Score–Mood logging and reflectionsMindfulness contentGuided breathing sessionsSleep trackingSleep stages and Sleep Score,Sleep Profile,–Mindfulness content for sleep,Sleep insights,Sleep stages and Sleep Score,Sleep Profile,–Mindfulness content for sleep,Sleep insights,Sleep stages and Sleep Score,Sleep Profile,–Mindfulness content for sleep,Sleep insights,Sleep stages and Sleep ScoreSleep ProfileSilent and Smart Wake alarmsMindfulness content for sleepSleep insightsSleep stages and Sleep ScoreSleep ProfileSilent and Smart Wake alarmsMindfulness content for sleepSleep insightsSleep stages and Sleep ScoreSleep ProfileSilent and Smart Wake alarmsMindfulness content for sleepSleep insightsSleep stages and Sleep ScoreSleep ProfileSilent and Smart Wake alarmsMindfulness content for sleepSleep insightsWater resistance5 ATM5 ATM5 ATM5 ATM5 ATM5 ATM5 ATMGPSBuilt-in GPSBuilt-in GPSBuilt-in GPSBuilt-in GPSBuilt-in GPSBuilt-in GPSConnected GPSSafety and emergency