COMPARE GPS: GARMIN D2 SERIES AVATION WATCHES

The Garmin D2 family of premium GPS aviator watches was the first to put true global flight navigation capability on the wrists of forward-looking pilots and flying enthusiasts. Compare the current Garmin D2 aviation watches below.

Product	D2 Delta S	D2 Delta	D2 Delta PX	D2 Mach 1	MARQ Aviator (Gen 2)	D2 Air X10
Lens Material	domed sapphire crystal	domed sapphire crystal	domed sapphire crystal	sapphire crystal	domed sapphire crystal	Corning Gorilla Glass 3
Bezel Material	stainless steel	titanium	titanium	titanium	titanium (Grade 5)/ceramic	stainless steel
Case Material	fiber-reinforced polymer with metal rear cover	fiber-reinforced polymer with metal rear cover	fiber-reinforced polymer with metal rear cover	fiber-reinforced polymer with titanium rear cover	titanium (Grade 5)	fiber-reinforced polymer with stainless-steel rear cover
QuickFit watch band compatible	✅ (20mm)	✅ (22mm)	✅ (26mm)	✅ (22mm)	✅ (22mm)	❌
Quick release bands	❌	❌	❌	❌	❌	✅ (20mm, Industry standard)
Strap material	silicone or leather	silicone or leather	silicone or leather	Leather version: Italian leather & silicone Titanium version: Titanium & silicone	hardened titanium	silicone
Physical size	42 x 42 x 15.4 mm	47 x 47 x 15.8 mm	51 x 51 x 17.5 mm	47 x 47 x 14.5 mm Fits wrists with the following circumference:  Silicone Band: 125-208 mm Leather Band: 132-210 mm Titanium Band: 132-215 mm	Diameter x Thickness: 46 x 15 mm Metal bracelet fits wrists with a circumference of 135-213 mm Silicone rubber strap fits wrists with a circumference of 135-213 mm	43.6 x 43.6 x 12.6 mm Fits wrists with a circumference of 125-190 mm
Touchscreen	❌	❌	❌	✅	✅	✅
Weight	65 g	76 g	87 g	70 g (case only: 47 g)	141 g (84 g with silicone rubber)	51.0 g
Water rating	10 ATM	10 ATM	10 ATM	10 ATM	10 ATM	5 ATM
Display type	sunlight-visible, transflective memory-in-pixel (MIP)	sunlight-visible, transflective memory-in-pixel (MIP)	sunlight-visible, transflective memory-in-pixel (MIP)	AMOLED; optional always-on mode	AMOLED (always-on)	AMOLED; optional always-on mode
Display size	1.2″ (30.4 mm) diameter	1.2″ (30.4 mm) diameter	1.2″ (30.4 mm) diameter	1.3″ (33.0 mm) diameter	1.2” (30.4 mm) diameter	1.3″ (33.0 mm) diameter
Display resolution	240 x 240 pixels	240 x 240 pixels	240 x 240 pixels	416 x 416 pixels	390 x 390 pixels	416 x 416 pixels
Color display	✅	✅	✅	✅	✅	✅
Battery life	Smartwatch mode: Up to 7 days GPS mode: Up to 11 hours GPS + Music: Up to 4.5 hours UltraTrac™ mode: Up to 25 hours	Smartwatch mode: Up to 12 days GPS mode: Up to 18 hours GPS + Music: Up to 8 hours UltraTrac™ mode: Up to 42 hours	Smartwatch mode: Up to 20 days GPS mode: Up to 32 hours GPS + SPO2: Up to 18 hours GPS + Music: Up to 13 hours UltraTrac™ mode: Up to 70 hours	Smartwatch mode: Up to 11 days (4 days always-on) Battery Saver Smartwatch mode: Up to 21 days GPS only: Up to 42 hours (30 hours always-on ) All satellite systems: Up to 32 hours (24 hours always-on) All satellite systems with multi-band: Up to 20 hours (15 hours always-on) All satellite systems with music: Up to 10 hours (9 hours always-on) Max battery GPS: Up to 75 hours Expedition GPS: Up to 14 days Fly activity (GPS + SpO2): Up to 24 hours	Smartwatch: Up to 16 days (6 days always-on) Battery Saver Watch Mode: Up to 21 days GPS Only: Up to 42 hours (30 hours always-on) All Satellite Systems: Up to 32 hours (24 hours always-on) All Satellite Systems + Multi-band: Up to 28 hours (22 hours always-on) All Satellite Systems + Music: Up to 10 hours (9 hours always-on) Max Battery GPS: Up to 75 hours Expedition GPS: Up to 14 days	Smartwatch mode: Up to 7 days Battery Saver Smartwatch Mode: Up to 10 days GPS mode with music: Up to 8 hours GPS mode without music: Up to 24 hours GPS + SPO2: Up to 20 hours See details
Memory/History	16 GB	16 GB	16 GB	32 GB	32 GB	200 hours of activity data
Clock Features	Time/Date in Zulu/UTC, 12/24h, day/date, GPS Time Sync, Automatic daylight saving time, Alarm clock, Timer, Stopwatch, Sunrise/sunset times	Time/Date in Zulu/UTC, 12/24h, day/date, GPS Time Sync, Automatic daylight saving time, Alarm clock, Timer, Stopwatch, Sunrise/sunset times	Time/Date in Zulu/UTC, 12/24h, day/date, GPS Time Sync, Automatic daylight saving time, Alarm clock, Timer, Stopwatch, Sunrise/sunset times	Time/Date in Zulu/UTC, 12/24h, day/date, GPS Time Sync, Automatic daylight saving time, Alarm clock, Timer, Stopwatch, Sunrise/sunset times	Time/Date in Zulu/UTC, GPS Time Sync, Automatic daylight saving time, Alarm clock, Timer, Stopwatch, Sunrise/sunset times	Time/Date in Zulu/UTC, 12/24h, day/date, GPS Time Sync, Automatic daylight saving time, Alarm clock, Timer, Stopwatch, Sunrise/sunset times
Sensors
GPS/GLONASS/Galileo	GPS/GLONASS/Galileo	GPS/GLONASS/Galileo	GPS/GLONASS/Galileo	GPS/GLONASS/Galileo	GPS/GLONASS/Galileo	GPS/GLONASS/Galileo
Multi-Frequency Positioning	❌	❌	❌	✅	✅	❌
SatIQ Technology	❌	❌	❌	❌	✅	❌
Garmin Elevate wrist heart rate monitor	✅	✅	✅	✅	✅	✅
Barometric altimeter	✅	✅	✅	✅	✅	✅
Compass	✅	✅	✅	✅	✅	✅
Gyroscope	✅	✅	✅	✅	✅	✅
Accelerometer	✅	✅	✅	✅	✅	✅
Thermometer	✅	✅	✅	✅	✅	✅ (with a separately sold accessory)
Ambient Light Sensor	❌	❌	❌	✅	✅	✅
Pulse Ox	❌	❌	✅ (with acclimation)	✅	✅ (with acclimation)	✅
Daily Smart Features
Connectivity	Bluetooth®, ANT+®, Wi-Fi®	Bluetooth®, ANT+®, Wi-Fi®	Bluetooth®, ANT+®, Wi-Fi®	Bluetooth®, ANT+®, Wi-Fi®	Bluetooth®, ANT+®, Wi-Fi®	Bluetooth®, ANT+®, Wi-Fi®
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	✅	✅	✅	✅	✅	✅
Controls smartphone music	✅	✅	✅	✅	✅	✅
Plays and controls watch music	✅	✅	✅	✅	✅	✅
Music storage	Up to 500 songs	Up to 500 songs	Up to 500 songs	Up to 2,000 songs	✅	Up to 650 songs
Find my Phone	✅	✅	✅	✅	✅	✅
Find my Watch	✅	✅	✅	✅	✅	✅
VIRB camera remote	✅	✅	✅	✅	✅	❌
Smartphone compatibility	iPhone®, Android™	iPhone®, Android™	iPhone®, Android™	iPhone®, Android™	iPhone®, Android™	iPhone®, Android™
Pairs with Garmin Golf App	❌	❌	❌	✅	✅	✅
Compatible with Garmin Connect Mobile	✅	✅	✅	✅	✅	✅
Stocks	❌	❌	❌	❌	✅	❌
Garmin Pay	✅	✅	✅	✅	✅	✅
Aviation Features
World wide airport databases	✅	✅	✅	✅	✅	✅
Altimeter with adjustable baro settings	✅	✅	✅	✅	✅	✅
3-axis compass with HSI (horizontal situation indicator)	✅	✅	✅	✅	✅	✅
Multiple time zones with Zulu/UTC	✅	✅	✅	✅	✅	✅
Wirelessly receive flight plans from Garmin Pilot	✅	✅	✅	✅	✅	✅
NEXRAD on moving map	✅	✅	✅	✅	✅	❌
Moving map with aviation airports, navaids, roads, bodies of water and more	✅	✅	✅	✅	✅	❌
Waypoints information page	✅	✅	✅	✅	✅	✅
Worldwide NAVAID and intersection database(s)	✅	✅	✅	✅	✅	✅
Connext avionics connectivity	✅	✅	✅	✅	✅	❌
In-flight Pulse Ox	❌	❌	✅	✅	✅	✅
Aviation alerts	❌	❌	❌	✅	✅	❌
MOS & Meteogram	❌	❌	❌	✅	✅	❌
Fly Activity Emergency Mode	❌	❌	❌	✅	✅	❌
Density Altitude Calculator	❌	❌	❌	✅	✅	❌
METAR (Meteorological Aerodrome Report)	✅	❌	❌	✅	✅	✅
TAF (Terminal Aerodrome Forecast)	✅	❌	❌	✅	✅	✅
Tactical Features
Stealth Mode	❌	❌	❌	✅	❌	❌
Dual Grid Coordinates	❌	❌	❌	✅	✅	❌
Kill Switch	❌	❌	❌	✅	❌	❌
Activity Tracking Features
Step counter	✅	✅	✅	✅	✅	✅
Move Bar (displays on device after a period inactivity; Walk for a couple of minuets to rest it)	✅	✅	✅	✅	✅	✅
Auto goal (learns your activity level and assigns a daily step goal)	✅	✅	✅	✅	✅	✅
Sleep monitoring (monitors total sleep and periods of movements or restful sleep)	✅	✅	✅	✅	✅	✅
Calories burned	✅	✅	✅	✅	✅	✅
Floors climbed	✅	✅	✅	✅	✅	✅
Distance traveled	✅	✅	✅	✅	✅	✅
Intensity minutes	✅	✅	✅	✅	✅	✅
TrueUp	✅	✅	✅	✅	✅	✅
Move IQ	✅	✅	✅	✅	✅	✅
Fitness Age	✅ (in app)	✅ (in app)	✅ (in app)	✅	✅ (in app)	✅
All-day stress tracking	✅	✅	✅	✅	✅	✅
Fitness Equipment/ Gym
Available gym activity profiles	Strength Training, Cardio Training, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Yoga	Strength Training, Cardio Training, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Yoga	Strength Training, Cardio Training, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Yoga	Strength, Cardio, HIIT and Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Pilates, Yoga	Strength, HIIT, Cardio and Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Breathwork, Pilates, Yoga	Strength, HIIT, Cardio and Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Breathwork, Pilates, Yoga
Cardio workouts	✅	✅	✅	✅	✅	✅
Strength workouts	✅	✅	✅	✅	✅	✅
HIIT workouts	❌	❌	❌	✅	✅	✅
Yoga workouts	❌	❌	❌	✅	✅	✅
Pilates workouts	❌	❌	❌	✅	✅	✅
On-screen workout animations	❌	❌	❌	✅	✅	✅
On-screen workout muscle maps	❌	❌	❌	❌	✅	✅
Automatic rep Counting	✅	✅	✅	✅	✅	✅
Training, Planning and Analysis Features
GPS speed and distance	✅	✅	✅	✅	✅	✅
Customizable data pages	✅	✅	✅	✅	✅	✅
Customizable activity profiles	✅	✅	✅	✅	✅	✅
Auto pause	✅	✅	✅	✅	✅	✅
Interval training	✅	✅	✅	✅	✅	❌
Advanced workouts	✅	✅	✅	✅	✅	✅
Downloadable training plans	✅	✅	✅	✅	✅	✅
Power Modes – Customizable in-activity battery settings	❌	❌	❌	✅	✅	❌
Auto lap	✅	✅	✅	✅	✅	✅
Manual Lap	✅	✅	✅	✅	✅	✅
Configurable lap alerts	✅	✅	✅	✅	✅	❌
V02 Max	✅	✅	✅	✅	✅	✅
Training status (lets you see if your training effectively by tracking your training history and fitness)	✅	✅	✅	✅	✅	❌
Training load (your total training load for the last 7 days calculated from estimated EPOC)	✅	✅	✅	✅	✅	❌
Training effect (aerobic)	✅	✅	✅	✅	✅	❌
Training effect (anaerobic)	✅	✅	✅	✅	✅	❌
Customizable alerts	✅	✅	✅	✅	✅	❌
Audio prompts	✅	✅	✅	✅	✅	❌
Finish time	✅	✅	✅	✅	✅	❌
Virtual partner	✅	✅	✅	✅	✅	❌
Race an activity	✅	✅	✅	✅	✅	❌
Auto multisport activities	✅	✅	✅	✅	✅	❌
Manual multisport activities	✅	✅	✅	✅	✅	❌
Course guidance	✅	✅	✅	✅	✅	❌
Segments (Live, Garmin)	✅	✅	✅	✅	✅	❌
Strava features (Beacon, live segments)	✅	✅	✅	✅	✅	❌
Live tracking	✅	✅	✅	✅	✅	✅
Group Livetrack	✅	✅	✅	✅	✅	❌
Round-trip course creator (running/cycling)	✅	✅	✅	✅	✅	❌
Trendline popularity Routing	✅	✅	✅	✅	✅	❌
Touch and/or button lock	✅	✅	✅	✅	✅	✅
Hot keys	✅	✅	✅	✅	✅	❌
Auto scroll	✅	✅	✅	✅	✅	✅
Activity history on watch	✅	✅	✅	✅	✅	✅
Physio TrueUp	❌	❌	❌	✅	✅	✅
Heart Rate Features
HR zones	✅	✅	✅	✅	✅	✅
HR alerts	✅	✅	✅	✅	✅	✅
HR calories	✅	✅	✅	✅	✅	✅
% HR max	✅	✅	✅	✅	✅	✅
% HRR	✅	✅	✅	✅	✅	❌
Recovery time	✅	✅	✅	✅	✅	❌
Auto max HR	✅	✅	✅	✅	✅	❌
HRV stress test (measures your heart rate variability while standing still, for 3 minuets, to provide you with an estimated stress level; the scale of this 1 to 100; low scores indicate lower stress levels)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	❌
Records heart rate while swimming	✅ (with HRM-Tri™ and HRM-Swim™)	✅ (with HRM-Tri™ and HRM-Swim™)	✅ (with HRM-Tri™ and HRM-Swim™)	✅ (with HRM-Tri™ and HRM-Swim™)	✅ (with HRM-Tri™ and HRM-Swim™)	❌
HR broadcast (broadcast HR data over ANT+ to paired devices)	✅	✅	✅	✅	✅	✅
Running Features
Available run profiles	Running, Treadmill Running, Trail Running	Running, Treadmill Running, Trail Running	Running, Treadmill Running, Trail Running	Running, Outdoor Track Running, Treadmill Running, Indoor Track Running, Trail Running, Virtual Running, Ultra Running	Running, Outdoor Track Running, Treadmill Running, Indoor Track Running, Trail Running, Virtual Running, Ultra Running	Running, Treadmill Running, Indoor Track Running
GPS-based distance, time and pace	✅	✅	✅	✅	✅	✅
Running dynamics	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	❌
Vertical oscillations and ratio (the degree of ‘bounce’ in your running motion and the cost-benefit ratio with stride length)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (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)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅
Stride length (real time)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	❌
Cadence (provides real-time number of steps per minuet)	✅	✅	✅	✅	✅	❌
Running Power	❌	❌	❌	❌	✅	❌
Grade-Adjusted Pace	❌	❌	❌	❌	✅	❌
Performance condition (after running 6-20 minuets, compares your real-time condition to your average fitness level)	✅	✅	✅	✅	✅	❌
Lactate threshold (through analysis of your pace and heart rate, estimates the point where your muscles start to rapidly fatigue)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (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	❌	❌	❌	❌	✅	❌
Golfing Features
Preloaded with 42,000 courses worldwide	✅	✅	✅	✅	✅	❌
Yardage to F/M/B (distance to front, middle and back)	✅	✅	✅	✅	✅	✅
Yardage to layups/doglegs	✅	✅	✅	✅	✅	✅
Measures shot distance (calculates exact yardage for shots from anywhere on course)	Automatic	Automatic	Automatic	Automatic	Automatic	Automatic
Digital scorecard	✅	✅	✅	✅	✅	✅
Stat tracking (strokes, putts per round, greens and fairways hits)	✅	✅	✅	✅	✅	✅
Garmin Autoshot	✅	✅	✅	✅	✅	✅
Full Vector map	❌	❌	❌	✅	✅	❌
Auto CourseView updates	✅	✅	✅	✅	✅	✅
Green View with manual pin position	✅	✅	✅	✅	✅	✅
Hazards and course targets	✅	✅	✅	✅	✅	✅
Pinpointer	❌	❌	❌	✅	✅	✅
PlaysLike Distance	❌	❌	❌	✅	✅	❌
Touch-targeting	❌	❌	❌	✅	✅	❌
TrueSwing compatible	✅	✅	✅	✅	❌	✅
Swing Tempo	❌	❌	❌	❌	✅	❌
Tempo Training	❌	❌	❌	❌	✅	❌
Round timer/odometer	✅	✅	✅	✅	✅	✅
Automatic Club Tracking Compatible (requires accessory)	❌	❌	❌	✅	✅	✅
Virtual Caddie	❌	❌	❌	❌	✅	❌
Tournament Legal	❌	❌	❌	✅	✅	✅
Green Contours (with Garmin Golf membership)	❌	❌	❌	❌	✅	❌
Outdoor Recreation Features
Available outdoor recreation profiles	Hiking, Climbing, Mountain Biking, Skiing, Snowboarding, XC Skiing, Stand Up Paddleboarding, Rowing, Kayaking, Jumpmaster, Tactical	Hiking, Climbing, Mountain Biking, Skiing, Snowboarding, XC Skiing, Stand Up Paddleboarding, Rowing, Kayaking, Jumpmaster, Tactical	Hiking, Climbing, Mountain Biking, Skiing, Snowboarding, XC Skiing, Stand Up Paddleboarding, Rowing, Kayaking, Jumpmaster, Tactical	Hiking, Indoor Climbing, Bouldering, Climbing, Mountain Biking, Skiing, Snowboarding, XC Classic Skiing, Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Snowshoeing, Jumpmaster, Tactical	Hiking, Indoor Climbing, Climbing, Bouldering, Mountain Biking, Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing, Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Snowshoeing, Horseback Riding, Jumpmaster, Tennis, Pickleball, Tactical, Disc Golf	Hiking, Indoor Climbing, Bouldering, 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	✅	✅	✅	✅	✅	❌
Around me mode	✅	✅	✅	✅	✅	❌
Up Ahead	❌	❌	❌	✅	✅	❌
NextFork Navigation	❌	❌	❌	❌	✅	❌
Elevation profile	✅	✅	✅	✅	✅	❌
Distance to destination	✅	✅	✅	✅	✅	❌
Barometric trend indicator with storm alert	✅	✅	✅	✅	✅	❌
ClimbPro ascent planner	✅	✅	✅	✅	✅	❌
Trail run auto climb	✅	✅	✅	❌	✅	❌
Vertical speed	✅	✅	✅	✅	✅	❌
Total ascent/decent	✅	✅	✅	✅	✅	❌
Future elevation plot	✅	✅	✅	✅	✅	❌
Preloaded topographical maps	✅	✅	✅	✅	✅	❌
Preloaded road and trail maps	❌	❌	❌	✅	✅	❌
Preloaded ski resort maps	❌	❌	❌	✅	✅	❌
Downloadable cartography support	✅	✅	✅	✅	✅	❌
Compatible with BaseCamp	✅	✅	✅	❌	❌	❌
GPS coordinates	✅	✅	✅	✅	✅	❌
Projected waypoint	✅	✅	✅	✅	✅	❌
Sight ‘N Go	✅ (via Connect IQ™)	✅ (via Connect IQ™)	✅ (via Connect IQ™)	✅ (via Connect IQ™)	✅	❌
Area calculation	✅ (via Connect IQ™)	✅ (via Connect IQ™)	✅ (via Connect IQ™)	✅ (via Connect IQ™)	✅ (via Connect IQ™)	✅
Hunt/fish calendar	✅ (via Connect IQ™)	✅ (via Connect IQ™)	✅ (via Connect IQ™)	✅ (via Connect IQ™)	✅ (via Connect IQ™)	✅
Sun and moon Information Dual grid coordinates	✅	✅	✅	✅	✅	✅
XERO Locations	✅	✅	✅	✅	✅	❌
Cycling Features
Available cycling profiles	Biking, Indoor Biking, Triathlon	Biking, Indoor Biking, Triathlon	Biking, Indoor Biking, Triathlon	Biking, Road Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, Triathlon	Biking, Road Biking, Indoor Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Cyclocross, Triathlon	Biking, Indoor Biking
Courses	✅	✅	✅	✅	✅	❌
Bike lap and lap maximum power (with power sensor)	✅	✅	✅	✅	✅	❌
Race an activity	✅	✅	✅	✅	✅	❌
Time/distance alerts (triggers alarm when you reach goal)	✅	✅	✅	✅	✅	✅
FTP (Functional Threshold Power)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	✅ (with compatible accessory)	❌
Garmin cycle map (routable cycling-specific street map)	✅	✅	✅	✅	✅	❌
Compatible with Vector and Rally (power meters)	✅	✅	✅	✅	✅	❌
Power meter compatible (displays power data from compatible third-party ANT+ -enable power meters)	✅	✅	✅	✅	✅	❌
Compatible with varia vision (head-mounted displays)	✅	✅	✅	✅	✅	❌
Compatible with varia radar (rear-facing radar)	✅	✅	✅	✅	✅	✅
Compatible with Varia lights	✅	✅	✅	✅	✅	✅
Speed and cadence sensor support (with sensor)	✅ (ANT+® and Bluetooth® Smart sensors)	✅ (ANT+® and Bluetooth® Smart sensors)	✅ (ANT+® and Bluetooth® Smart sensors)	✅	✅	✅
Swimming Features
Available swim profiles	Pool Swimming, Open Water Swimming, Swimming/Running	Pool Swimming, Open Water Swimming, Swimming/Running	Pool Swimming, Open Water Swimming, Swimming/Running	Pool Swimming, Open Water Swimming, Swimming/Running	Pool Swimming, Open Water Swimming, Swimming/Running	Pool Swimming
Pool swim metrics (lengths, distance, pace, stroke, count/rate, calories)	✅	✅	✅	✅	✅	✅
Stroke type detection (freestyle, backstroke, breaststroke, butterfly)	✅	✅	✅	✅	✅	✅
Swim efficiency (SWOLF)	✅	✅	✅	✅	✅	✅
Drill logging	✅	✅	✅	✅	✅	❌
Pool swim workouts	✅	✅	✅	✅	✅	❌
Open water swim metrics (distance, pace, stroke count/rate, calories)	✅	✅	✅	✅	✅	❌
Heart rate (real-time during rests, interval and session stats during rests, and automatic heart rate downloadable post-swim)	✅  (with HRM-Tri™ and HRM-Swim™)	✅  (with HRM-Tri™ and HRM-Swim™)	✅  (with HRM-Tri™ and HRM-Swim™)	✅ (with HRM-Tri™, HRM-Swim™ and HRM-Pro™)	✅ (with HRM-Tri™, HRM-Swim™ and HRM-Pro™)	❌
Underwater wrist-based heart rate	❌	❌	❌	✅	✅	✅
Time and distance alerts	❌	❌	❌	✅	✅	✅