Garmin
Instinct® 3 – 45 mm, AMOLED vs vívoactive 6
Size, specs & wrist fit compared
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Which one fits you
On wrists narrower than about 47mm, the vívoactive 6 is the safer pick — it stays proportionate down to roughly 44mm, where the Instinct® 3 – 45 mm, AMOLED starts to hang over the edge. Above 47mm both sit cleanly, and the Instinct® 3 – 45 mm, AMOLED gives you more presence.
The Instinct® 3 – 45 mm, AMOLED wears larger than the vívoactive 6 (45mm vs 42.2mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The vívoactive 6 is the slimmer of the two (10.9mm vs 14.9mm), so it slides under a cuff more easily.
On the wrist the vívoactive 6 feels lighter (23g vs 53g, case only).
Among the 385 45mm watches we hold thickness for, the Instinct® 3 – 45 mm, AMOLED is thicker than 84% — it will sit high even though the case width reads modest.
Among the 694 42mm watches we hold thickness for, the vívoactive 6 is thinner than 84%, so it wears flatter than its width suggests.
The Instinct® 3 – 45 mm, AMOLED is 2.8mm wider, 2.8mm longer, 4mm thicker and 30g heavier than the vívoactive 6. Both are circular.
Instinct® 3 – 45 mm, AMOLED
vívoactive 6
Case width
45mm
42.2mm−2.8mm
Lug-to-lug
45mm
42.2mm−2.8mm
Thickness
14.9mm
10.9mm−4mm
Weight
53g
23g−30g
Switch or add watches
Garmin
Instinct® 3 – 45 mm, AMOLED
Garmin
vívoactive 6
Fit tool
Watch Fit Tool
For sports watches, lug-to-lug (L2L) is what matters most — it decides whether a watch overhangs your wrist. Bulky is fine; overhang is not.
Your wrist
mm
≈ 146.9mm aroundHow to Measure Your Wrist
1
Measure at the point where you wear your watch — typically just below the wrist bone.
2
Flat width — lay your arm on a table, palm facing up, and measure straight across the top of your wrist with a ruler. Bone to bone; do not follow the curve down the sides.
3
Around — wrap a tape measure snugly round the wrist. No tape? Wrap a strip of paper, mark the overlap and hold the strip against a ruler.
⚠ Important
Width ≠ circumference. They are different numbers — around 170mm is about 64mm across — so set the toggle to whichever one you actually measured before you type it in.
Garmin Instinct® 3 – 45 mm, AMOLED
Case 45.0mm · Lug-to-lug 45.0mm · Thickness 14.9mm · 53g
Balanced Fit
45mm on a 55mm wrist
Understated Balanced Sweet Spot Bold Overhang ⚠
Across the wrist it works — 5.0mm spare each side — but a tall watch on this wrist. Fine over a sleeve, awkward under one.
On a 55mm wrist the sweet spot is 47–53mm lug to lug. This one is 45mm, so you could go bigger.
How to Measure
Measure where you wear it, just below the wrist bone. Either of these works — the tool converts between them.
- 1. Flat width — arm flat on a table, palm up. Measure straight across the top of the wrist, bone to bone, ignoring the curve down the sides.
- 2. Around — a tape, or a strip of paper marked and held against a ruler, snug the whole way round.
Against one you know
Leather: Attaches at the lugs, so the case back rests on your skin. Thins and softens with wear. Typical figures, not this model’s own.
Show the measurementsHide the measurements
- Across the wrist5.0mm spare each side
Comfortable, with visible skin either side.
- Off the wrist14.9mm off the skin
A tall watch on this wrist. Fine over a sleeve, awkward under one. (14.9mm case, back against the skin)
- How it seats~5.2mm under the rim
Seats well, with the case back following most of the wrist.
- Weight on the wrist53g
Light enough to forget you have it on. (1.0g per mm of wrist)
Garmin vívoactive 6
Case 42.2mm · Lug-to-lug 42.2mm · Thickness 10.9mm · 23g
Balanced Fit
42.2mm on a 55mm wrist
Understated Balanced Sweet Spot Bold Overhang ⚠
Comfortably inside the edges of your wrist, and it seats and sits low enough to wear without thinking about it.
On a 55mm wrist the sweet spot is 47–53mm lug to lug. This one is 42.2mm, so you could go bigger.
How to Measure
Measure where you wear it, just below the wrist bone. Either of these works — the tool converts between them.
- 1. Flat width — arm flat on a table, palm up. Measure straight across the top of the wrist, bone to bone, ignoring the curve down the sides.
- 2. Around — a tape, or a strip of paper marked and held against a ruler, snug the whole way round.
Against one you know
Leather: Attaches at the lugs, so the case back rests on your skin. Thins and softens with wear. Typical figures, not this model’s own.
Show the measurementsHide the measurements
- Across the wrist6.4mm spare each side
Comfortable, with visible skin either side.
- Off the wrist10.9mm off the skin
Normal sports-watch height for a wrist this size. (10.9mm case, back against the skin)
- How it seats~4.1mm under the rim
Seats well, with the case back following most of the wrist.
- Weight on the wrist23g
Light enough to forget you have it on. (0.4g per mm of wrist)
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist.
Highlight
- Garmin Instinct® 3 – 45 mm, AMOLED45mm · 14.9mm thick
- Garmin vívoactive 642.2mm · 10.9mm thick
3D preview
Instinct® 3 – 45 mm, AMOLED vs vívoactive 6 on a wrist
Sized to your own wrist, turned any way you like.
Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.
Battery life compared
Furthest apart in Smartwatch mode, where the Instinct® 3 – 45 mm, AMOLED lasts 1.6× as long as the vívoactive 6 (18 days against 11 days).
Instinct® 3 – 45 mm, AMOLEDvívoactive 6
Battery Saver
24 days—Smartwatch
18 days11 daysExpedition GPS
16 days—Max Battery GPS
68 hours—GPS Only
32 hours—All Satellite Systems
25 hours—All Satellite Systems + Multi-Band
23 hours—
Specifications
The short version
7 key specs| Spec | GarminInstinct® 3 – 45 mm, AMOLED | Garminvívoactive 6 |
|---|---|---|
| Case Width | 45mm | 42.2mm |
| Thickness | 14.9mm | 10.9mm |
| Weight | 53g | 23g |
| Shape | Circular | Circular |
| Display type | AMOLED (always-on) | AMOLED (optional always-on mode) |
| Battery life | Smartwatch: Up to 18 days (7 days always-on) Battery Saver Watch Mode: Up to 24 days GPS Only: Up to 32 hours All Satellite Systems: Up to 25 hours All Satellite Systems + Multi-Band: Up to 23 hours* Max Battery GPS: Up to 68 hours Expedition GPS: Up to 16 days *Assuming typical use with SatIQ technology | Smartwatch mode: Up to 11 days (5 days display always-on) Battery Saver Smartwatch mode: Up to 21 days GPS-Only GNSS mode: Up to 21 hours All-Systems GNSS mode: Up to 17 hours All-Systems GNSS mode with music: Up to 8 hours See details |
| Released | 2025 | 2025 |
Every specification
436 specs| Spec | Garmin Instinct® 3 – 45 mm, AMOLED | Garmin vívoactive 6 |
|---|---|---|
| Overview | ||
| Family | Garmin | Garmin |
| General | ||
| Battery life | Smartwatch: Up to 18 days (7 days always-on) Battery Saver Watch Mode: Up to 24 days GPS Only: Up to 32 hours All Satellite Systems: Up to 25 hours All Satellite Systems + Multi-Band: Up to 23 hours* Max Battery GPS: Up to 68 hours Expedition GPS: Up to 16 days *Assuming typical use with SatIQ technology | Smartwatch mode: Up to 11 days (5 days display always-on) Battery Saver Smartwatch mode: Up to 21 days GPS-Only GNSS mode: Up to 21 hours All-Systems GNSS mode: Up to 17 hours All-Systems GNSS mode with music: Up to 8 hours See details |
| Battery type | Lithium ion | Lithium ion |
| Display Size | 1.2" (30 mm) diameter | 1.2" (30.4 mm) diameter |
| Case material | fiber-reinforced polymer | fiber-reinforced polymer |
| Color display | Yes | Yes |
| Lens Material | Chemically Strengthened Glass | — |
| Bezel Material | fiber-reinforced polymer/aluminum | — |
| Memory/History | 4 GB | 8 GB |
| Strap material | silicone | silicone |
| Charging method | Garmin proprietary plug charger | Garmin proprietary plug charger |
| Large font option | Yes | Yes |
| Display resolution | 390 x 390 pixels | 390 x 390 pixels |
| QuickFit® watch band compatible | yes (22 mm) | — |
| Weight | — | 23 g (36 g with included band) |
| Lens material | — | Corning® Gorilla® Glass 3 |
| Physical size | — | 42.2 x 42.2 x 10.9 mm Fits wrists with a circumference of 125-190 mm |
| Bezel material | — | anodized aluminum |
| Quick Release bands | — | yes (20 mm, Industry standard) |
| Sensors | ||
| GPS | Yes | — |
| Compass | Yes | — |
| GLONASS | Yes | — |
| Galileo | Yes | — |
| Gyroscope | Yes | — |
| Thermometer | Yes | — |
| Accelerometer | Yes | — |
| SatIQ™ Technology | Yes | — |
| Barometric altimeter | Yes | — |
| Pulse Ox Blood Oxygen Saturation Monitor | Yes | — |
| Garmin Elevate™ wrist heart rate monitor | Yes | — |
| Stocks | — | Yes |
| Calendar | — | Yes |
| Passcode | — | Yes |
| Calculator | — | Yes |
| Connectivity | — | Bluetooth®, ANT+®, Wi-Fi® |
| Garmin Share | — | Yes |
| Find My Phone | — | Yes |
| Evening report | — | Yes |
| Morning report | — | Yes |
| Red shift mode | — | Yes |
| Weather forecasts | — | Yes |
| Smart Notifications | — | Yes |
| Smartphone compatibility | — | iPhone®, Android™ |
| Controls smartphone music | — | Yes |
| On-device Connect IQ™ Store | — | Yes |
| Plays and controls watch music | — | Yes |
| Find My Phone during GPS activity | — | Yes |
| Pairs with Garmin Connect™ Mobile | — | Yes |
| Compatible with Garmin Messenger app | — | Yes |
| Find My Garmin (helps locate lost device) | — | Yes |
| Battery saver (customizable low power watch) | — | Yes |
| Realtime settings sync with Garmin Connect™ mobile | — | Yes |
| View images from notifications on watch (Android™ only) | — | Yes |
| Text response/reject phone call with text (Android™ only) | — | Yes |
| Connect IQ™ (downloadable watch faces, data fields and apps) | — | Yes |
| Product Info | ||
| Main SKU | 010-02936-00 | — |
| Product ID | 1316397 | — |
| Product Name | Instinct® 3 – 45 mm, AMOLED | — |
| Release Date | 1/6/2025 | — |
| Product Variation | Black with Black Band | — |
| Clock Features | ||
| Timer | Yes | — |
| Stopwatch | Yes | — |
| Time/date | Yes | — |
| Alarm clock | Yes | — |
| GPS Time Sync | Yes | — |
| Sunrise/sunset times | Yes | — |
| Automatic daylight saving time | Yes | — |
| Sleep | — | yes (advanced) |
| Hydration | — | Yes |
| Breathwork | — | Yes |
| Meditation | — | Yes |
| Fitness age | — | Yes |
| Sleep coach | — | Yes |
| Health status | — | Yes |
| Nap detection | — | Yes |
| All-day stress | — | Yes |
| Women's health | — | Yes |
| Health snapshot | — | Yes |
| Sleep alignment | — | Yes |
| Respiration rate | — | Yes |
| Lifestyle logging | — | Yes |
| Resting heart rate | — | Yes |
| Breathing variations | — | Yes |
| Relaxation reminders | — | Yes |
| Abnormal heart rate alerts | — | yes (high and low) |
| Relaxation breathing timer | — | Yes |
| Body Battery™ energy monitor | — | Yes |
| Heart rate (constant, every second) | — | Yes |
| Gaming Features | ||
| Gaming Activity | Yes | — |
| GameOn™ app compatible | Yes | — |
| Cycling Features | ||
| Courses | Yes | — |
| MTB Grit & Flow | Yes | — |
| Race an activity | Yes | — |
| Power meter compatible | Yes | — |
| Advanced cycling dynamics | Yes | — |
| Compatible with Varia™ lights | Yes | — |
| FTP (Functional Threshold Power) | Yes | — |
| Speed and cadence sensor support (w/sensor) | Yes | — |
| Bike lap and lap maximum power (with power sensor) | Yes | — |
| Compatible with Varia™ radar (rear-facing radar) | Yes | — |
| Compatible with Vector™ and Rally™ (power meters) | Yes | — |
| Compatible with Varia Vision™ (head-mounted display) | Yes | — |
| Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories) | Yes | — |
| Time and distance alerts | — | Yes |
| Auto rest (pool swim only) | — | Yes |
| Underwater wrist-based heart rate | — | Yes |
| Basic rest timer (up from 0) (pool swim only) | — | Yes |
| Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only) | — | Yes |
| Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories) | — | Yes |
| Open-water swim metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), calories) | — | Yes |
| Golfing Features | ||
| Tournament legal | Yes | — |
| Digital scorecard | Yes | — |
| Garmin AutoShot™ | Yes | — |
| Round timer/odometer | Yes | — |
| Auto CourseView updates | Yes | — |
| Yardage to layups/doglegs | Yes | — |
| Hazards and course targets | Yes | — |
| Pairs with Garmin Golf app | Yes | — |
| Green View with manual pin position | Yes | — |
| CT10 Automatic club tracking compatible (requires accessory) | Yes | — |
| Yardage to F/M/B (distance to front, middle and back of green) | Yes | — |
| Stat tracking (strokes, putts per round, greens and fairways hit) | Yes | — |
| Measures shot distance (calculates exact yardage for shots from anywhere on course) | manual | — |
| Sun and moon information | — | yes (via Connect IQ™) |
| Running Features | ||
| Run workouts | Yes | — |
| Running power | Yes | — |
| Race predictor | Yes | — |
| Foot pod capable | Yes | — |
| Running dynamics | Yes | — |
| Lactate threshold | yes (with compatible accessory) | — |
| Grade-adjusted pace | Yes | — |
| Trail run auto climb | Yes | — |
| Performance condition | Yes | — |
| Run/Walk/Stand detection | Yes | — |
| Stride length (real time) | Yes | — |
| PacePro™ Pacing Strategies | Yes | — |
| Vertical oscillation and ratio | Yes | — |
| Ground contact time and balance | yes (GCT balance with accessory) | — |
| GPS-based distance, time and pace | Yes | — |
| Cadence (provides real-time number of steps per minute) | Yes | — |
| PinPointer | — | Yes |
| Tournament legal | — | Yes |
| Digital scorecard | — | Yes |
| Garmin AutoShot™ | — | Yes |
| Round timer/odometer | — | Yes |
| Yardage to layups/doglegs | — | Yes |
| Hazards and course targets | — | Yes |
| Pairs with Garmin Golf app | — | Yes |
| Green View with manual pin position | — | Yes |
| CT1 Automatic club tracking compatible (requires accessory) | — | Yes |
| CT10 Automatic club tracking compatible (requires accessory) | — | Yes |
| Yardage to F/M/B (distance to front, middle and back of green) | — | Yes |
| Stat tracking (strokes, putts per round, greens and fairways hit) | — | Yes |
| Measures shot distance (calculates exact yardage for shots from anywhere on course) | — | automatic |
| What You'll Love | ||
| Display type | AMOLED (always-on) | AMOLED (optional always-on mode) |
| Water rating | 10 ATM | Swim, 5 ATM |
| Garmin Pay™ | Yes | Yes |
| LED flashlight | Yes | — |
| Multi-band GPS | Yes | — |
| Training status | Yes | — |
| Training readiness | Yes | — |
| Pulse Ox blood oxygen | Yes | yes (spot-check, and optional all-day and in sleep) |
| Sleep score and insights | Yes | Yes |
| Battery life (smartwatch mode) | Up to 18 days (7 days always-on) | Up to 11 days (5 days display always-on) |
| Timer | — | Yes |
| Stopwatch | — | Yes |
| Time/date | — | Yes |
| Alarm clock | — | Yes |
| Touchscreen | — | Yes |
| GPS Time Sync | — | Yes |
| Music storage | — | Yes |
| Wheelchair mode | — | Yes |
| Smart wake alarm | — | Yes |
| Sunrise/sunset times | — | Yes |
| Automatic daylight saving time | — | Yes |
| Activity Profiles | ||
| Gym | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing | — |
| Swim | Pool Swimming, Open Water Swimming | — |
| Cycling | Biking, Road Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX | — |
| Wellness | Walking, Indoor Walking, Pilates, Yoga | — |
| Multisport | Triathlon | — |
| In the ring | Boxing, Mixed Martial Arts | — |
| Team sports | Basketball, Volleyball, Field Hockey, Ice Hockey, Football/Soccer, American Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball | — |
| Motor sports | Motorcycling, Overlanding, Motocrossing, ATVing, Snowmobiling | — |
| On the Water | Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Water Skiing, Snorkeling, Wakeboarding, Wakesurfing, Tubing, Whitewater | — |
| Racket sports | Tennis, Pickleball, Badminton, Squash, Table Tennis, Padel, Platform Tennis, Racquetball | — |
| Snow & winter | Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing, XC Skate Skiing, Backcountry Skiing, Ice Skating, Snowshoeing | — |
| Indoor running | Treadmill Running, Indoor Track Running, Virtual Running | — |
| Outdoor running | Running, Outdoor Track Running, Trail Running, Obstacle Racing | — |
| Outdoor recreation | Hiking, Rucking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery | — |
| Other activity profiles | Tactical, Inline Skating | — |
| Assistance | — | Yes |
| Incident Detection during select activities | — | Yes |
| Incident detection alert on phone for wearables | — | Yes |
| Swimming Features | ||
| Pool swim workouts | Yes | — |
| Time and distance alerts | Yes | — |
| Auto rest (pool swim only) | Yes | — |
| Drill logging (pool swim only) | Yes | — |
| Countdown start (pool swim only) | Yes | — |
| Underwater wrist-based heart rate | Yes | — |
| "Repeat on" rest timer (pool swim only) | Yes | — |
| Basic rest timer (up from 0) (pool swim only) | Yes | — |
| Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only) | Yes | — |
| Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories) | Yes | — |
| Open-water swim metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), calories) | Yes | — |
| Heart rate from external HRM (real-time during rests, interval and session stats during rests, and automatic heart rate download post-swim) | Yes | — |
| Tactical Features | ||
| XERO™ Locations | Yes | — |
| Dual grid coordinates | Yes | — |
| Outdoor Recreation | ||
| Tides | Yes | — |
| TracBack® | Yes | — |
| Sight 'N Go | Yes | — |
| Tide glance | Yes | — |
| Back to start | Yes | Yes |
| UltraTrac mode | Yes | — |
| Vertical speed | Yes | — |
| GPS coordinates | Yes | — |
| Reference point | Yes | — |
| Area calculation | Yes | — |
| Elevation profile | Yes | — |
| Projected waypoint | Yes | — |
| Total ascent/descent | Yes | — |
| Future elevation plot | Yes | — |
| Distance to destination | Yes | — |
| Expedition GPS Activity | Yes | — |
| Sun and moon information | Yes | — |
| Point-to-point navigation | Yes | — |
| Bread crumb trail in real time | Yes | — |
| Barometric trend indicator with Storm Alert | Yes | — |
| Daily Smart Features | ||
| Calendar | Yes | — |
| Passcode | Yes | — |
| Connectivity | Bluetooth®, ANT+® | — |
| Garmin Share | Yes | — |
| Find My Phone | Yes | — |
| Find My Watch | Yes | — |
| VIRB® Remote | Yes | — |
| Morning report | Yes | — |
| Red shift mode | Yes | — |
| Weather forecasts | Yes | — |
| Smart Notifications | Yes | — |
| Smart trainer control | Yes | — |
| Smartphone compatibility | iPhone®, Android™ | — |
| Controls smartphone music | Yes | — |
| On-device Connect IQ™ Store | Yes | — |
| Pairs with Garmin Connect™ Mobile | Yes | — |
| Compatible with Garmin Messenger app | Yes | — |
| Battery saver (customizable low power watch) | Yes | — |
| Realtime settings sync with Garmin Connect™ mobile | Yes | — |
| View images from notifications on watch (Android™ only) | Yes | — |
| Text response/reject phone call with text (Android™ only) | Yes | — |
| Connect IQ™ (downloadable watch faces, data fields and apps) | Yes | — |
| HIIT workouts | — | Yes |
| Yoga workouts | — | Yes |
| Cardio workouts | — | Yes |
| Pilates workouts | — | Yes |
| Strength workouts | — | Yes |
| Garmin Running Coach | — | Yes |
| Garmin Coach - Strength | — | Yes |
| Garmin Running Coach Experts | — | Yes |
| On-screen workout animations | — | Yes |
| On-screen workout muscle maps | — | Yes |
| Workouts for wheelchair users | — | Yes |
| Garmin Coach - Prebuilt Cycling Plans | — | Yes |
| Daily suggested workout - Walking (duration based) | — | Yes |
| Activity Tracking Features | ||
| TrueUp™ | Yes | — |
| Move IQ™ | Yes | — |
| Step counter | Yes | — |
| Floors climbed | Yes | — |
| Calories burned | Yes | — |
| Distance traveled | Yes | — |
| Intensity minutes | Yes | — |
| Automatic rep counting | Yes | — |
| Garmin Connect™ Challenges app | yes (optional Connect IQ app) | — |
| Move alerts (displays on device after a period of inactivity) | Yes | — |
| Auto goal (learns your activity level and assigns a daily step goal) | Yes | — |
| % HR max | — | Yes |
| HR zones | — | Yes |
| HR alerts | — | Yes |
| HRV status | — | Yes |
| Manual lap | — | Yes |
| Auto scroll | — | Yes |
| HR calories | — | Yes |
| Voice alerts | — | Yes |
| Physio TrueUp | — | Yes |
| Recovery time | — | Yes |
| VO2 Max (Run) | — | Yes |
| Training effect | — | Yes |
| Workout benefit | — | Yes |
| Advanced workouts | — | Yes |
| Interval training | — | Yes |
| GPS speed and distance | — | Yes |
| Customizable data pages | — | Yes |
| Touch and/or button lock | — | Yes |
| Activity history on watch | — | Yes |
| Downloadable training plans | — | Yes |
| Training effect (anaerobic) | — | Yes |
| HRM running pace and distance | — | Yes |
| Customizable activity profiles | — | Yes |
| Auto Pause® automatic timer halt | — | Yes |
| Respiration rate (during exercise) | — | yoga, breathwork and meditation only |
| Auto Lap® interval tracking feature | — | Yes |
| HR broadcast (broadcasts HR data over ANT+® to paired devices) | — | yes (using ANT+ or BLE) |
| Improved interval (includes open repeats, intervals data page, rest screen and auto detection) | — | Yes |
| Workout and Training Plans | ||
| HIIT workouts | Yes | — |
| Yoga workouts | Yes | — |
| Cardio workouts | Yes | — |
| Pilates workouts | Yes | — |
| Strength workouts | Yes | — |
| Garmin Running Coach Experts | Yes | — |
| On-screen workout animations | Yes | — |
| On-screen workout muscle maps | Yes | — |
| Garmin Coach - Prebuilt Cycling Plans | Yes | — |
| Daily Suggested Workout - Cycling (Pace and Heart Rate Based) | Yes | — |
| Daily Suggested Workout - Running (Pace and Heart Rate Based) | Yes | — |
| Gym | — | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Indoor Rowing, Jump Roping |
| Swim | — | Pool Swimming, Open Water Swimming |
| Cycling | — | Biking, Road Biking, Gravel Biking, Bike Touring, eBiking, Handcycling, Indoor Handcycling Indoor Biking, Cyclocross |
| Wellness | — | Walking, Pilates, Yoga, Indoor Walking, Mobility |
| In the ring | — | Boxing, Mixed Martial Arts |
| Team sports | — | Basketball, Volleyball, Field Hockey, Ice Hockey, Football/Soccer, American Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball |
| Motor sports | — | Motorcycling, Overlanding, Motocrossing, ATVing, Snowmobiling |
| On the water | — | Stand Up Paddleboarding, Kayaking, Rowing, Snorkeling |
| Racket sports | — | Tennis, Pickleball, Badminton, Squash, Table Tennis, Padel, Platform Tennis, Racquetball |
| Indoor running | — | Treadmill Running, Indoor Track Running |
| Outdoor running | — | Running, Outdoor Track Running, Trail Running, Obstacle Running |
| Snow and winter | — | Skiing, Snowboarding, XC Classic Skiing, XC Skate Skiing, Ice Skating, Snowshoeing |
| Outdoor recreation | — | Hiking, Horseback Riding, Golfing, Mountaineering, Disc Golf, Archery |
| Other activity profiles | — | Inline Skating |
| Health & Wellness Monitoring | ||
| Sleep | yes (advanced) | — |
| Hydration | yes (in Garmin Connect™ and optional Connect IQ™ widget) | — |
| Breathwork | Yes | — |
| Fitness age | Yes | — |
| Sleep coach | Yes | — |
| Nap detection | Yes | — |
| All-day stress | Yes | — |
| Women's health | yes (in Garmin Connect™ and optional Connect IQ™ widget) | — |
| Health snapshot | Yes | — |
| Respiration rate | Yes | — |
| Resting heart rate | Yes | — |
| Breathing variations | Yes | — |
| Relaxation reminders | Yes | — |
| Abnormal heart rate alerts | yes (high and low) | — |
| Relaxation breathing timer | Yes | — |
| Body Battery™ energy monitor | Yes | — |
| Wrist-based heart rate (constant, every second) | Yes | — |
| GPS | — | Yes |
| QZSS | — | Yes |
| BeiDou | — | Yes |
| Compass | — | Yes |
| GLONASS | — | Yes |
| Galileo | — | Yes |
| Gyroscope | — | Yes |
| Thermometer | — | yes (tempe™ sensor required) |
| Accelerometer | — | Yes |
| Ambient light sensor | — | Yes |
| Pulse Ox Blood Oxygen Saturation Monitor | — | Yes |
| Garmin Elevate™ wrist heart rate monitor | — | Yes |
| Safety and Tracking Features | ||
| Assistance | Yes | — |
| Live Event Sharing | Yes | — |
| Incident Detection during select activities | Yes | — |
| Incident detection alert on phone for wearables | Yes | — |
| TrueUp™ | — | Yes |
| Move IQ™ | — | Yes |
| Step counter | — | Yes |
| Calories burned | — | Yes |
| Distance traveled | — | Yes |
| Intensity minutes | — | Yes |
| Weight shift alert | — | Yes |
| Automatic rep counting | — | Yes |
| Wheelchair push tracker | — | Yes |
| Move Alert movement options | — | Yes |
| Garmin Connect™ Challenges app | — | Yes |
| Move alerts (displays on device after a period of inactivity) | — | Yes |
| Auto goal (learns your activity level and assigns a daily step goal) | — | Yes |
| Kid Activity Tracking Features | ||
| Toe-to-Toe™ Challenges app | yes (optional Connect IQ Toe-to-Toe™ Challenges app) | — |
| Training, Planning and Analysis Features | ||
| % HRR | Yes | — |
| % HR max | Yes | — |
| HR zones | Yes | — |
| HR alerts | Yes | — |
| Shortcuts | Yes | — |
| HRV status | Yes | — |
| Load ratio | Yes | — |
| Manual lap | Yes | — |
| Rest timer | Yes | — |
| Auto max HR | Yes | — |
| Auto scroll | Yes | — |
| Finish time | Yes | — |
| HR calories | Yes | — |
| Voice alerts | Yes | — |
| Custom alerts | Yes | — |
| Physio TrueUp | Yes | — |
| Recovery time | Yes | — |
| Training load | Yes | — |
| VO2 Max (Run) | Yes | — |
| Course guidance | Yes | — |
| Training effect | Yes | — |
| Virtual Partner | Yes | — |
| Workout benefit | Yes | — |
| Race an Activity | Yes | — |
| Advanced workouts | Yes | — |
| Interval training | Yes | — |
| Race glance/widget | Yes | — |
| Training load focus | Yes | — |
| VO2 Max (Trail Run) | Yes | — |
| GPS speed and distance | Yes | — |
| Configurable lap alerts | Yes | — |
| Customizable data pages | Yes | — |
| Unified training status | Yes | — |
| Touch and/or button lock | Yes | — |
| Activity history on watch | Yes | — |
| Multisport auto transition | Yes | — |
| Downloadable training plans | Yes | — |
| Training effect (anaerobic) | Yes | — |
| Manual multisport activities | Yes | — |
| HRM running pace and distance | Yes | — |
| Heat and altitude acclimation | Yes | — |
| Customizable activity profiles | Yes | — |
| Auto Pause® automatic timer halt | Yes | — |
| Respiration rate (during exercise) | yes (with compatible accessory) | — |
| Auto Lap® interval tracking feature | Yes | — |
| Primary benefit (Training Effect labels) | Yes | — |
| Power Modes - customizable in-activity battery settings | Yes | — |
| HR broadcast (broadcasts HR data over ANT+® to paired devices) | Yes | — |
| Improved interval (includes open repeats, intervals data page, rest screen and auto detection) | Yes | — |
| Run workouts | — | Yes |
| Race predictor | — | Yes |
| Foot pod capable | — | Yes |
| Running dynamics | — | Yes |
| Run/Walk/Stand detection | — | Yes |
| PacePro™ Pacing Strategies | — | Yes |
| GPS-based distance, time and pace | — | Yes |
| Cadence (provides real-time number of steps per minute) | — | Yes |
| Variant | ||
| Color | — | Lunar Gold with Bone Band |
| Available Colors | — | Slate with Black Band; Metallic Pink Dawn with Bone Band; Cream Gold with French Gray Band; Lunar Gold with Bone Band; Metallic Jasper Green with Jasper Green Band; Metallic Pink Dawn with Pink Dawn Band; Slate with Pebble Gray Band |
| Mapping & Navigation | ||
| Compatible with Varia™ lights | — | Yes |
| Speed and cadence sensor support (w/sensor) | — | yes (using ANT+ or BLE) |
| Compatible with Varia™ radar (rear-facing radar) | — | Yes |
| Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories) | — | Yes |
Wrist Fit
Garmin Instinct® 3 – 45 mm, AMOLED
Sits best on wrists ~47–64mm wide (≈ 12.6–17.1cm circumference).
Garmin vívoactive 6
Sits best on wrists ~44–60mm wide (≈ 11.7–16.0cm circumference).
Frequently Asked Questions
Is the Garmin Instinct® 3 – 45 mm, AMOLED bigger than the Garmin vívoactive 6?
The Garmin Instinct® 3 – 45 mm, AMOLED is bigger — 45mm vs 42.2mm case width.
Which fits a smaller wrist better, the Garmin Instinct® 3 – 45 mm, AMOLED or the Garmin vívoactive 6?
The Garmin Instinct® 3 – 45 mm, AMOLED suits wrists around 47–64mm wide, and the Garmin vívoactive 6 around 44–60mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Garmin Instinct® 3 – 45 mm, AMOLED and Garmin vívoactive 6 side by side at true scale?
Yes — the schematics and photos above show both watches at matched scale, and our fit tool overlays each on your wrist width.
Related Comparisons
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