Unlike its predecessor, the Forerunner 245, the Forerunner 255 is a true multisport GPS smartwatch featuring both auto and manual multisport activities. Moreover, having a lot of features in common with the higher-end Forerunner 955, it’s a cheaper alternative. The Forerunner 255 shares a lot of features in common with the 955, it also welcomes many of the newly added health tracking features like Morning report, HRV status, onscreen animated muscle maps and running power. Nonetheless, the Forerunner 955 is a more equipped smartwatch. In this post, we’ll compare the differences between the Garmin Forerunner 255 and 955 to help you choose your next multisport GPS smartwatch.

Garmin Forerunner 255 Music vs 955 Forerunner Full Specifications

Garmin Forerunner 255Garmin Forerunner 255 MusicGarmin Forerunner 955

ABOUT DEVICE

Device nameGarmin Forerunner 255Garmin Forerunner 255 MusicGarmin Forerunner 955
Device typeFitness/GPS smartwatchFitness/GPS smartwatchFitness/GPS smartwatch
PredessesorGarmin Forerunner 245Garmin Forerunner 245Garmin Forerunner 945
Successor______
Released dateJune, 2022June, 2022June, 2022
Ideal forUnisexUnisexMen

DISPLAY

Display typeTransflective memory-in-display (MIP)Transflective memory-in-display (MIP)Transflective memory-in-display (MIP)
Display size1.3 inches1.3 inches1.3 inches
Display resolution260 x 260 pixels260 x 260 pixels260 x 260 pixels
Pixel density282.8 PPI282.8 PPI282.8 PPI
Input type 5 buttons, (Not touchscreen) 5 buttons, (Not touchscreen)5 Physical buttons
Touchscreen
Always-onYesYesYes
Customizable watch faceYesYesYes

BODY

ShapeCircularCircularCircular
Dimension45.6 x 45.6 x 12.9 mm45.6 x 45.6 x 12.9 mm46.5 x 46.5 x 14.4 mm
Weight49 grams49 grams52 grams
Casing materialFiber-reinforced polymerFiber-reinforced polymerFiber-reinforced polymer with polymer rear cover
Strap/band materialSiliconeSiliconeSilicone
Bezel MaterialFiber-reinforced polymerFiber-reinforced polymerFiber-reinforced polymer
Strap size22mm22mm22mm
Interchangeable band Yes, 22mmYes, 22mmYes, 22mm
Screen protectionCorning Gorilla Glass 3Corning Gorilla Glass 3Corning Gorilla Glass DX
Water resistant/ProtectionYes, 5ATMYes, 5ATMYes, 5ATM
Swim-proofYes, recommendedYes, recommendedYes, recommended
Color(s)Tidal blue
Slate gray
Whitestone
Black
Black
Whitestone

MEMORY

RAM------
Internal storage__4GB32GB
Memory card slotNoNoNo

CONNECTIVITY

BluetoothYes, and ANT+Yes, and ANT+Yes, and ANT+
Bluetooth callingNoNoNo
Wi-FiNoYesYes
NFCYesYesYes
Payment systemGarmin PayGarmin PayGarmin pay
GPSGPS/GLONASS/GalileoGPS/GLONASS/GalileoGPS/GLONASS/Galileo

CELLULAR TECHNOLOGY

TechnologyNoNoNo
SIMNoNoNo
BandNoNoNo

NOTIFICATIONS

Email alertYesYesYes
SMS alertYesYesYes
Calls alertYesYesYes
Event reminderYesYesYes
WeatherYesYesYes
Third-party appsYesYesYes
Text responseYesYesYes (android only)

FITNESS TRACKING

Sleep apneaNoNoNo
Sleep trackingYesYesYes
StepsYesYesYes
Floors climbedYesYesYes
Heart rate monitoringYesYesYes
CaloriesYesYesYes
DistanceYesYesYes
StressYesYesYes
VO2 Max.YesYesYes
Blood oxygenYesYesYes
Blood pressureNoNoNo
Menstrual cycle trackingYesYesYes
Swim trackingYesYesYes
Under-water heart rate trackingYesYesYes
Preloaded mapsNoNoYes
On-screen workout modesYesYesYes
Triathlon modeYesYesYes
ECG TrackingNoNoNo
Preloaded sport modesYesYesYes
Safety trackingYesYesYes

MEDIA

Audiomp3/mp4mp3/mp4mp3/mp4
Music streamingYesYesYes
Bluetooth musicYesYesYes
RadioNoNoNo
LoudspeakerNoNoNo
MicrophoneNoNoNo
CameraNoNoNo

SENSORS

PLATFORM

Operating system (OS)Proprietary OSProprietary OSProprietary OS
Chipset------
CPU------
GPU------

BATTERY

Type of batteryNon-removable Li-ion batteryNon-removable Li-ion batteryNon-removable Li-ion battery
Battery capacity ------
Battery lifeSmartwatch mode: Up to 14 days
GPS-only mode: Up to 30 hrs
Smartwatch mode: Up to 14 days
GPS-only mode: Up to 30 hrs
GPS mode with music: Up to 6.5hrs
Smartwatch mode: Up to 15 days
GPS mode without music: Up to 42 hrs
Charging typeUSB charging cableUSB charging cableUSB charging cable
Charging timeAbout 1-2 hoursAbout 1-2 hoursAbout 1-2 hours
Battery saver modeYesYesYes
Solar powerNoNoNo
Rapid chargingNoNo__

CLOCK FEATURES

Time/DateYesYesYes
StopwatchYesYesYes
AlarmYesYesYes

OTHER FUNCTIONS

Control cameraYesYesYes
Music controlYesYesYes
Find phoneYesYesYes

MISC

Compatibility Android and iOS
Check if your device is compatible
Android and iOS
Check if your device is compatible
Android and iOS
Check if your device is compatible
Companion appGarmin connect IQGarmin connect IQGarmin connect IQ
Voice commandNoNoNo

BOX CONTENTS

Garmin Forerunner 255Garmin Forerunner 255Garmin Forerunner 955
StrapsStrapsStraps
USB charging cableUSB charging cableUSB charging cable
Quick start guideQuick start guideQuick start guide
NOTE: We can't guarantee that all the information on this table are 100% correct. Read full disclaimer. Please, report an error.
Official SiteOfficial SiteOfficial Site

Difference Between Forerunner 255 and 955

In a nutshell, the difference between the Forerunner 255 and 955 is that the latter is a better-equipped smartwatch. The Forerunner 955 has a bigger display size, longer battery life, higher storage capacity, and more activity-tracking features.

Meanwhile, the Forerunner 255 is available in two models, the Standard and Music edition. The music edition allows you to add music to the watch which you can listen to offline. The Forerunner 955 also comes in two models, the Standard and Solar models. The Solar model has a longer battery life than the standard edition, as a result, it’s priced higher.

Garmin Forerunner 255 vs Forerunner 955 Features

Design

Starting with the design, the Forerunner 255 looks very much like the Forerunner 955. It spots the same circular design with 5 physical buttons. The only thing that can help you differentiate these two by merely looking at them is that the Forerunner 955 has an inner marking around the edge of the bezel.

Beyond the appearance, the Forerunner 255 is a slightly more compact smartwatch and weighs slightly less than the Forerunner 955. Going by the average size and weights of smartwatches I have reviewed, I consider these two lightweight and compact. None of these should weigh you down.

The case material is the same for both watches. Moreover, both watches come with silicone straps that can be swapped for another one of your choice.

While the Forerunner 255 spots a Corning Gorilla Glass 3, the Forerunner 955 spots a slightly more durable Corning Gorilla Glass DX.

Like many other Garmin smartwatches, both the Forerunner 255 and 955 are rated 5ATM which means that you can wear this to the swimming pool or to the shower (diving isn’t recommended).

Both watches support tracking for open water and pool swimming. Each of these two will track your pace, distance, calories, strokes, swim efficiency (SWOLF) and also detect your stroke type while swimming.

Display

Both watches spot a transflective memory-in-pixel display that is easy to read. You shouldn’t have any problem reading complications on the screen even under direct sunlight.

Display size is the same for both watches except for the 41mm unit of the Forerunner 255 which has a 1.1 inches display size.

Navigation is easy with 5 physical buttons on both watches. Moreover, touchscreen support was introduced to the Forerunner 955 which no doubt makes it a lot easier to operate. It is the first smartwatch in the Forerunner 9 series to have a touch-sensitive screen.

So as per display, we have two watches that have very easy-to-read displays and are also easy to operate.

Activity Tracking

The Forerunner 255 and 955 are both equipped with the same number of sensors, however, the Forerunner 955 can track more activities than the 255. Apart from the battery life, price, storage capacity and display size, the number of activities each of these can track is one of the main differences between these two. The Forerunner 955 is in the same league as the Fenix 7 and Epix series.

Nonetheless, both watches will track all the basics like your steps, calories, intensity minutes, respiratory rate, stress, 24/7 heart rate monitoring and track your sleep in all four stages of sleep. There are many more activities each of these can track, these are listed in the table below.

Both watches feature the high-end Garmin Elevate v4 heart rate sensor, the same sensor on all recently released Garmin watches. This sensor is more advanced than its predecessor, thus resulting in a more accurate activity tracking.

Another interesting feature is the new multi-band GPS sensor that enables increased location tracking accuracy. This is in addition to inbuilt GPS with support for three satellite systems; GLONASS, Galileo and GPS.

Both watches also feature popular features like the health snapshot that gives you an overview of vital health metrics consisting of pulse ox level, respiratory rate, heart rate variability and stress.

Interesting features like the onscreen animated workout are also present on both watches, and this can significantly save you some money on gym class subscriptions. You also get the relatively new onscreen animated muscle maps that indicate what muscles are targeted during a workout.

Newly added features like the morning report that gives you an overview of your training and recovery performance is also present on both Forerunner 255 and 955. Others include the new HRV status and running power which now doesn’t require a third-party app.

In terms of security features, both the Forerunner 255 and 955 feature incidental fall detection that can activate Assistance, a feature that will allow the watch to send a message with your location and name to a preset emergency contact when your phone is nearby.

Both watches also feature LiveTrack which allows friends to follow your workout and there is Live Event Sharing which allows you to share your current workout stats with friends. All these security features require your phone to be close by except for the Forerunner 945 LTE.

Meanwhile, the Forerunner 255 lacks Spectator messaging which is present on the 955. With Spectator messaging, your LiveTrack followers can send you audio and text messages during a workout (phone must be nearby).

You can see that most of the newly introduced features are present on the Forerunner 255 despite being a lower-end device.

  1. Talking about what activity tracking features are available on Forerunner 955 but not on the 255, the 955 features more gym profiles like breathwork, indoor biking and bouldering.
  2. The Forerunner 955 also features heat and altitude acclamation that shows the temperature and current elevation gain. There is also the real-time stamina feature that helps you manage your exertion during a workout so that you don’t overwork yourself.
  3. Other training features available on the Forerunner 955 but not on 255 include Garmin live segments, Strava live segments, and road-trip course creator for running and cycling workouts.
  4. Trendline popularity routing is also available on the Forerunner 955. This feature gives you access to billions of data collected from other users that allows you to find the best route and help you avoid busy routes. It’s akin to Google maps suggesting the best route, only that in this case other users have actually followed these routes and that should give you some form of safety.
  5. Meanwhile, while the Morning report is present on the Forerunner 255, it lacks training readiness which is available on Forerunner 955. Training readiness gives you an insight into your recovery status which is based on your recent stress level, sleep, recovery, and heart rate variability. This feature is quite similar to body battery energy monitor that tells you if it’s a good day to train.
  6. One major difference that separates the Forerunner 955 from the 255 is the availability of preloaded topographical maps as well as road and trail maps. These are offline maps that come in handy in helping you plan your outdoor workout more efficiently. You can also download more maps, and with touchscreen support, it will be a lot easier to access maps. Routable cycling maps plus advanced cycling dynamics are also present on the 955.
  7. The Forerunner 955 also features more outdoor recreational profiles, including xc skate skiing, kayaking, snowshoeing, mapping, navigating, tennis, pickleball, padel, track me and project waypoint.
  8. Climbpro is present on Forerunner 955 but not on the 255. This feature can help you achieve more in your hiking, running and climbing activities. It shows you upcoming climbs, at what distance they occur as well as the gradient.
  9. There are also more running profiles on the Forerunner 955 than on the 255, this includes gravel biking, bike commuting, bike touring and cyclocross.

So in essence, while the Forerunner 255 has a lot of activity tracking features including most of the newly added features, the 955 has even more which in summary include more activity profiles, preloaded maps, Climbpro, real-time stamina, live segments, trendline popularity routing and Spectator messaging.

Media Storage

In terms of storage, the Forerunner 955 has 32GB storage compared to 4GB of the Forerunner 255. On both watches, you can add your personal music, and you can also add music from popular music services like Amazon Music, Deezer and Spotify.

Notifications

Like every other Gamin smartwatch, both the 255 and 955 will alert you by vibration when you get a message on your phone (your phone must be nearby of course). You can also reply to messages using preset quick replies. This is only supported for Android smartphones.

Battery Life

The battery life of the Forerunner 255 and 955 also differs, the 955 has a longer battery life. With the 955, you get up to 15 days of battery life compared to about 12 days with the Forerunner 255. It’s even longer with the Forerunner 955 Solar which offers up to 20 days of battery life. Both watches have customizable battery-saver modes that can get you a little longer battery life.

Forerunner 255 (41mm) vs (46mm)

Forerunner 255 (41mm) vs (46mm)

The Forerunner 255 is available in two sizes; 41mm and 46mm. Both sizes have the same features, price and approximately the same battery life. The only difference is that the 46mm unit has a larger display size of 1.3 inches compared to the 1.1 inches of The 41mm unit. Also, while the 41mm unit is compatible with 18mm straps, the 46mm model is compatible with 22mm straps.

The 46mm model is available in tidal blue and slate gray colors, while the 41mm model is available in light pink and powder gray colors.

Both the 46mm and 41mm models are available in music and no-music models.

The Forerunner 255 music comes with a 4GB storage capacity with about 3GB available that allows you to load music onboard the watch. As a result, the music edition is priced at $400 compared to the non-music edition price of $350

Forerunner 955 vs 955 Solar

Forerunner 955 vs 955 Solar

The Forerunner 955 is available in two models, Forerunner 955 standard model and Forerunner 955 Solar model. These two are the same in every aspect except for differences in the battery life. With the Standard edition, you get up to 15 days long battery life compared to up to 20 days with the Solar edition. Thus, the Solar model is priced at $600 compared to the $500 of the standard edition.

Forerunner 255 or 955 – Which is Right For You?

From all indications, Forerunner 255 and 955 are great multisport GPS smartwatches for advanced activity tracking that can significantly increase your workout productivity.

However, the Forerunner 955 is a more advanced smartwatch. It has touchscreen support that makes navigation a lot easier. It also has a longer battery life, more storage space plus more activity-tracking features. Moreover, you get preloaded maps that come in very handy for your outdoor workouts.

So, if you have the budget, the Forerunner 955 is a better bargain than the 255. However, if you have a lower budget but still want a comprehensive multisport GPS smartwatch plus the ability to choose your preferred size, the Forerunner 255 is no doubt a fantastic smartwatch as opined in this DC Rainmaker’s review.

Garmin Forerunner 255 vs 955 Activity Tracking Features Comparison

ACTIVITY TRACKING FEATURES

Garmin Forerunner 255 (Non-music)Garmin Forerunner 955

SMART FEATURES

Connect IQ (Downloadable watch faces, data fields, widgets, and apps)YesYes
On-device Connect IQ storeYesYes
Text response/reject phone calls with text (Android only)YesYes
CalendarYesYes
WeatherYesYes
Real-time settings sync with Garmin Connect™ mobileYesYes
Battery saver - customizable low power watchYesYes
Controls smartphone musicYesYes
Plays and Control Watch MusicNoYes
Find my phoneYesYes
Find my watchYesYes
Virb remoteYesYes

HEALTH MONITORING FEATURES

Wrist-based Heart Rate trackingYesYes
Daily resting heart rateYesYes
AbNormal heart rate alertYes (high and low)Yes
Respiration Rate (24/7)YesYes
Fitness AgeYesYes
Blood oxygen (SpO2) monitoringYes (spot-check, and optional all-day acclimation and in sleep)Yes (spot-check, and optionally all-day and in sleep)
Battery energy monitorYesYes
Stress trackingYesYes
Relaxation remindersYesYes
Relaxation breathing timerYesYes
Sleep monitoringYesYes
Advanced sleep tracking/Sleep ScoreYesYes
Menstrual cycle trackingYes (in Garmin Connect™ and optional Connect IQ™ widget)Yes (in Garmin Connect and optional Connect IQ widget)
Hydration trackingYes (in Garmin Connect and optional Connect IQ widget)Yes (in Garmin Connect and optional Connect IQ widget)
Health SnapshotYesYes

SAFETY AND TRACKING FEATURES

LivetrackYesYes
Group LivetrackNoYes
Live event sharingYes (Android only)Yes (Android Only)
Incident detection during select activitiesYesYes
AssistanceYesYes
Spectator Messaging (New)NoYes (with compatible smartphone)
Assistance Plus (New)NoNo

TACTICAL FEATURES

Stealth modeNoNo
Night vision modeNoNo
Dual Grid CoordinatesNoYes
Kill switchNoNo

ACTIVITY TRACKING FEATURES

Steps CounterYesYes
Move bar (displays on device after a period of inactivity; walk for a couple of minutes to reset it)YesYes
Auto goal (learns your activity level and assigns a daily step goal)YesYes
Sleep monitoring (monitors total sleep and periods of movement or restful sleep)YesYes
Calories burnedYesYes
Floors climbedYesYes
Distance travelledYesYes
Intensity minutesYesYes
TrueupYesYes
Move IQ

YesYes

GYM & FITNESS EQUIPMENT

Available gym activity profilesStrength, HIIT, cardio and elliptical training, stair stepping, floor climbing, indoor rowing, pilates and yogaStrength, cardio, elliptical training, stair stepping, floor climbing, indoor rowing, pilates, yoga, breathwork, HIIT, indoor climbing and bouldering
Cardio workoutsYesYes
Strength workoutsYesYes
HIIT workoutsYesYes
Yoga workoutsYesYes
Pilates workoutsYesYes
On-screen workout animationsYesYes
Automatic rep countingYesYes
On-screen workout muscle mapsYesYes

TRAINING, PLANNING & ANALYSIS FEATURES

GPS speed and distanceYesYes
Customizable data pagesYesYes
Customizable activity profilesYesYes
Auto PauseYesYes
Interval trainingYesYes
Improved interval (Includes open repeats, intervals data page, rest screen and auto detection) (New)YesYes
Advanced workoutsYesYes
Downloadable training plansYesYes
Power modes - customizable in-activity battery settingsNo_
Auto lapYesYes
Manual lapYesYes
Rest timer (New)YesYes
Configurable lap alertsYesYes
Heat and altitude acclimationNoYes
VO2 Max. (Run)YesYes
VO2 Max. (Trail run)YesYes
Real-Time staminaNoYes
Training status (lets you see if you're training effectively by tracking your training history and fitness level trend.)YesYes
Training load (your total training load for the last 7 days calculated from estimated epoc)YesYes
Training load focusYesYes
Training effect (aerobic)YesYes
Training effect (anaerobic)YesYes
Primary Benefit (training effect labels)YesYes
Improved Recovery Time (New)YesYes
Daily Suggested Workouts (New)Yes (7 days)Yes
Custom alertsYesYes
Audio promptsYesYes
Finish timeYesYes
Virtual partnerYesYes
Race an activityYesYes
Auto multisport activitiesYesYes
Manual multisport activitiesYesYes
Course guidanceYesYes
Garmin Live SegmentsNoYes
Strava Live SegmentsNoYes
Round-Trip course creator (running/cycling)NoYes
Trendline Popularity RoutingNoYes
Touch and/or button lockYesYes
Hot keysNoYes
Auto scrollYesYes
Activity history on watchYesYes
Noopener Noreferrer">Physio TrueupYesYes

HEART RATE TRACKING FEATURES

HR zonesYesYes
HR alertsYesYes
HR caloriesYesYes
% HR max.YesYes
% HRRYesYes
Recovery timeYesYes
Auto max HRYesYes
Morning report (New)YesYes
Race glance/widget (New)YesYes
HRV status (New)YesYes
Training readiness (New)NoYes
HRV stress test (measures your heart rate variability while standing still, for 3 minutes, to provide you with an estimated stress level; the scale of this is 1 to 100; low scores indicate lower stress levels)NoYes (with compatible accessory)
HR broadcast (broadcasts HR data over ANT+ to paired devices)YesYes
Respiration rate (during exercise)YesYes (with compatible accessory)

RUNNING FEATURES

Available run profilesRunning, outdoor track running, treadmill running, indoor track running, trail running, virtual running and ultra runningRunning, treadmill running, indoor track running, trail running, virtual running, outdoor track running and ultra running
GPS-based distance, time and paceYesYes
Running dynamicsYes (with compatible accessory)Yes (with compatible accessory)
Vertical oscillation and ratio (the degree of 'bounce' in your running motion and the cost-benefit ratio with stride length)Yes (with compatible accessory)Yes (with compatible accessory)
Ground contact time and balance (shows how much time, in the running motion, your foot is on the ground rather than in flight and lets you check your running symmetry)Yes (with compatible accessory)Yes (with compatible accessory)
Stride length (real time)Yes (with compatible accessory)Yes (with compatible accessory)
Cadence (provides real-time number of steps per minute)YesYes
Running power (New)Yes (with compatible accessory)Yes (with compatible accessory)
Performance condition (after running 20 minutes, compares your real-time condition to your average fitness level)YesYes
Lactate threshold (through analysis of your pace and heart rate, estimates the point where your muscles start to rapidly fatigue)Yes (with compatible accessory)Yes (with compatible accessory)
PacePro pacing strategiesYesYes
Run workoutsYesYes
Race predictorYesYes
Course and weather-specific race predictor (New)YesYes
Foot Pod CapableYesYes
Run/Walk/Stand detectionYes__

GOLF FEATURES

Preloaded with 42,000 courses worldwideNoYes
Yardage to F/M/B (distance to front, middle and back of green)NoYes
Yardage to layups/doglegsNoYes
Measures shot distance (calculates exact yardage for shots from anywhere on course)NoAutomatic
Digital ScorecardNoYes
Custom targetsNoNo
Stat tracking (strokes, putts per round, greens and fairways hit)NoYes
Garmin AutoshotNoYes
Full vector mapNoNo
Auto Courseview updatesNoYes
Green view with manual pin positionNoYes
Hazards and course targetsNoYes
PinpointerNoYes
Playslike distanceNoNo
Touch-targeting (touch target on display to see the distance to any point) (New)NoNo
Handicap scoringNoYes
Truswing compatibleNoYes
Round timer/odometerNoYes
Automatic club tracking compatible (requires accessory)NoNo
Tournament LegalNoYes

OUTDOOR RECREATION

Available outdoor recreation profilesHiking, skiing, sNowboarding, XC classic skiing, stand Up paddleboarding and rowingHiking, climbing, skiing, sNowboarding, backcountry skiing, xc classic skiing, xc skate skiing, stand up paddleboarding, rowing, kayaking, sNowshoeing, mapping, navigating, tennis, pickleball, padel, track me and project waypoint.
Point-to-Point navigationYesYes
Bread crumb trail in real timeYesYes
Back to startYesYes
TracbacKYesYes
Ultratrac ModeYesYes
Around me modeNoYes
Up aheadYesYes
Elevation profileYesYes
Distance to destinationYesYes
Barometric trend indicator with storm alertYesYes
ClimbPro ascent plannerNoYes
Trail run auto climbNoYes
Vertical speedYesYes
Total ascent/descentYesYes
Future elevation plotYesYes
Preloaded Topographical mapsNoYes
Preloaded road and trail maps (New)NoYes
Preloaded Ski resort mapsNoNo
Downloadable cartography supportNoYes
Compatible with BasecampNo__
GPS coordinatesYesYes
Sight 'N GONoYes
Area calculationNoYes (via Connect IQ)
Hunt/fish calendarNoYes (via Connect IQ)
Projected waypointYesYes
Sun and moon informationYesYes (via Connect IQ)
Xero locationsNoYes
Expedition GPS activityNoNo
TidesNoNo

CYCLING FEATURES

Available cycling profilesBiking, indoor biking, mountain biking, eBiking and eMountain bikingBiking, road biking, mountain biking, gravel biking, bike commuting, bike touring, ebiking, emountain biking, indoor biking and cyclocross.
Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories)YesYes
CoursesYesYes
MTB Grit & FlowNoYes
Cycle map (routable cycling-specific street map)NoYes
Bike lap and lap maximum power (with power sensor)YesYes
Race an activityYesYes
FTP (Functional Threshold Power)YesYes (with compatible accessory)
Compatible with Vector (Power Meter)YesYes
Power Meter compatibleYesYes
Advanced cycling dynamicsNoYes
Compatible with Varia Vision (head-mounted display)YesYes
Compatible with Varia Radar (Rear-Facing Radar)YesYes
Compatible with Varia LightsYesYes
Speed and cadence sensor support (with sensor)Yes (ANT+ and Bluetooth Smart sensors)Yes

SWIMMING FEATURES

Available swim profilesPool swimming and open water swimmingPool swimming, open water swimming, swimming/running
Open-water swim metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), calories)YesYes
Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories)YesYes
Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only)YesYes
Drill logging (pool swim only)YesYes
Basic rest timer (up from 0) (pool swim only)YesYes
"Repeat on" rest timer (pool swim only) (New)YesYes
Auto rest (pool swim only) (New)YesYes
Time and distance alertsYesYes
Pacing alerts (pool swim only) (New)YesYes
Countdown start (pool swim only)YesYes
Pool swim workoutsYesYes
Critical swim speed (New)YesYes
Underwater wrist-based heart rateYesYes
Heart rate from external HRM (real-time during rests, interval and session stats during rests, and automatic heart rate download post-swim)YesYes (with HRM-Tri and HRM-Swim)
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