Garmin
Instinct® 3 – 45 mm, Solar vs Instinct® 3 – 50 mm, AMOLED, Tactical Edition
Size, specs & wrist fit compared
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Which one fits you
On wrists narrower than about 53mm, the Instinct® 3 – 45 mm, Solar is the safer pick — it stays proportionate down to roughly 47mm, where the Instinct® 3 – 50 mm, AMOLED, Tactical Edition starts to hang over the edge. Above 53mm both sit cleanly, and the Instinct® 3 – 50 mm, AMOLED, Tactical Edition gives you more presence.
The Instinct® 3 – 50 mm, AMOLED, Tactical Edition wears larger than the Instinct® 3 – 45 mm, Solar (50mm vs 45mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The Instinct® 3 – 50 mm, AMOLED, Tactical Edition is the slimmer of the two (14.4mm vs 14.9mm), so it slides under a cuff more easily.
On the wrist the Instinct® 3 – 45 mm, Solar feels lighter (52g vs 59g, case only).
Among the 384 45mm watches we hold thickness for, the Instinct® 3 – 45 mm, Solar is thicker than 84% — it will sit high even though the case width reads modest.
The Instinct® 3 – 50 mm, AMOLED, Tactical Edition is 5mm wider, 5mm longer, 0.5mm thinner and 7g heavier than the Instinct® 3 – 45 mm, Solar. Both are circular.
Instinct® 3 – 45 mm, Solar
Instinct® 3 – 50 mm, AMOLED, Tactical Edition
Case width
45mm
50mm+5mm
Lug-to-lug
45mm
50mm+5mm
Thickness
14.9mm
14.4mm−0.5mm
Weight
52g
59g+7g
Switch or add watches
Garmin
Instinct® 3 – 45 mm, Solar
Garmin
Instinct® 3 – 50 mm, AMOLED, Tactical Edition
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, Solar45mm · 14.9mm thick
- Garmin Instinct® 3 – 50 mm, AMOLED, Tactical Edition50mm · 14.4mm thick
3D preview
Instinct® 3 – 45 mm, Solar vs Instinct® 3 – 50 mm, AMOLED, Tactical Edition 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 Battery Saver mode, where the 45 mm, Solar lasts 2.2× as long as the 50 mm, AMOLED, Tactical Edition (65 days against 30 days).
45 mm, Solar50 mm, AMOLED, Tactical Edition
Battery Saver
65 days30 daysExpedition GPS
36 days20 daysSmartwatch
28 days24 daysMax Battery GPS
100 hours86 hoursGPS Only
40 hours +130 hours40 hoursAll Satellite Systems
28 hours +50 hours32 hoursAll Satellite Systems + Multi-Band
24 hours +40 hours30 hours
Amber figures are the solar-assisted runtime the manufacturer publishes for that mode.
Specifications
The short version
7 key specs| Spec | GarminInstinct® 3 – 45 mm, Solar | GarminInstinct® 3 – 50 mm, AMOLED, Tactical Edition |
|---|---|---|
| Case Width | 45mm | 50mm |
| Thickness | 14.9mm | 14.4mm |
| Weight | 52g | 59g |
| Shape | Circular | Circular |
| Display type | Monochrome, sunlight-visible, transflective memory-in-pixel (MIP) | AMOLED (always-on) |
| Battery life | Smartwatch: Up to 28 days/Unlimited with solar* Battery Saver Watch Mode: Up to 65 days/Unlimited with solar* GPS Only: Up to 40 hours/130 hours with solar** All Satellite Systems: Up to 28 hours/50 hours with solar** All Satellite Systems + Multi-Band: Up to 24 hours/40 hours with solar*** Max Battery GPS: Up to 100 hours/Unlimited with solar** Expedition GPS: Up to 36 days/Unlimited with solar* *Solar charging, assuming all-day wear with 3 hours per day outside in 50,000 lux conditions **Solar charging, assuming use in 50,000 lux conditions ***Solar charging, assuming use in 50,000 lux conditions; assuming typical use with SatIQ technology | Smartwatch: Up to 24 days (9 days always-on) Battery Saver Watch Mode: Up to 30 days GPS Only: Up to 40 hours All Satellite Systems: Up to 32 hours All Satellite Systems + Multi-Band: Up to 30 hours* Max Battery GPS: Up to 86 hours Expedition GPS: Up to 20 days *assuming typical use with SatIQ technology |
| Released | 2025 | 2025 |
Every specification
263 specs| Spec | Garmin Instinct® 3 – 45 mm, Solar | Garmin Instinct® 3 – 50 mm, AMOLED, Tactical Edition |
|---|---|---|
| Overview | ||
| Family | Garmin | Garmin |
| General | ||
| Battery life | Smartwatch: Up to 28 days/Unlimited with solar* Battery Saver Watch Mode: Up to 65 days/Unlimited with solar* GPS Only: Up to 40 hours/130 hours with solar** All Satellite Systems: Up to 28 hours/50 hours with solar** All Satellite Systems + Multi-Band: Up to 24 hours/40 hours with solar*** Max Battery GPS: Up to 100 hours/Unlimited with solar** Expedition GPS: Up to 36 days/Unlimited with solar* *Solar charging, assuming all-day wear with 3 hours per day outside in 50,000 lux conditions **Solar charging, assuming use in 50,000 lux conditions ***Solar charging, assuming use in 50,000 lux conditions; assuming typical use with SatIQ technology | Smartwatch: Up to 24 days (9 days always-on) Battery Saver Watch Mode: Up to 30 days GPS Only: Up to 40 hours All Satellite Systems: Up to 32 hours All Satellite Systems + Multi-Band: Up to 30 hours* Max Battery GPS: Up to 86 hours Expedition GPS: Up to 20 days *assuming typical use with SatIQ technology |
| Battery type | Lithium ion | Lithium ion |
| Display Size | custom, two-window design; 0.9” x 0.9” (23 x 23 mm) | 1.3" (33 mm) diameter |
| Case material | fiber-reinforced polymer | fiber-reinforced polymer |
| Lens Material | Power Glass™ | Chemically Strengthened Glass |
| Bezel Material | fiber-reinforced polymer/aluminum | fiber-reinforced polymer/aluminum |
| Memory/History | 128 MB | 4 GB |
| Strap material | silicone | silicone |
| Charging method | Garmin proprietary plug charger | Garmin proprietary plug charger |
| Display resolution | 176 x 176 pixels | 416 x 416 pixels |
| QuickFit® watch band compatible | yes (22 mm) | yes (26 mm) |
| Color display | — | Yes |
| Sensors | ||
| GPS | Yes | Yes |
| Compass | Yes | Yes |
| GLONASS | Yes | Yes |
| Galileo | Yes | Yes |
| Gyroscope | Yes | Yes |
| Thermometer | Yes | Yes |
| Accelerometer | Yes | Yes |
| SatIQ™ Technology | Yes | Yes |
| Barometric altimeter | Yes | Yes |
| Pulse Ox Blood Oxygen Saturation Monitor | Yes | Yes |
| Garmin Elevate™ wrist heart rate monitor | Yes | Yes |
| Ambient light sensor | — | Yes |
| Product Info | ||
| Main SKU | 010-02934-00 | 010-03020-50 |
| Product ID | 1315317 | 1718241 |
| Product Name | Instinct® 3 – 45 mm, Solar | Instinct® 3 – 50 mm, AMOLED, Tactical Edition |
| Release Date | 1/6/2025 | 4/26/2025 |
| Product Variation | Black with Black Band | Black with Black Band |
| Clock Features | ||
| Timer | Yes | Yes |
| Stopwatch | Yes | Yes |
| Time/date | Yes | Yes |
| Alarm clock | Yes | Yes |
| GPS Time Sync | Yes | Yes |
| Sunrise/sunset times | Yes | Yes |
| Automatic daylight saving time | Yes | Yes |
| Gaming Features | ||
| Gaming Activity | Yes | Yes |
| GameOn™ app compatible | Yes | Yes |
| Cycling Features | ||
| Courses | Yes | Yes |
| MTB Grit & Flow | Yes | Yes |
| Race an activity | Yes | Yes |
| Power meter compatible | Yes | Yes |
| Advanced cycling dynamics | Yes | Yes |
| Compatible with Varia™ lights | Yes | Yes |
| FTP (Functional Threshold Power) | Yes | Yes |
| Speed and cadence sensor support (w/sensor) | Yes | Yes |
| Bike lap and lap maximum power (with power sensor) | Yes | Yes |
| Compatible with Varia™ radar (rear-facing radar) | Yes | Yes |
| Compatible with Vector™ and Rally™ (power meters) | Yes | Yes |
| Compatible with Varia Vision™ (head-mounted display) | Yes | Yes |
| Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories) | Yes | Yes |
| Golfing Features | ||
| Tournament legal | Yes | Yes |
| Digital scorecard | Yes | Yes |
| Garmin AutoShot™ | Yes | Yes |
| Round timer/odometer | Yes | Yes |
| Auto CourseView updates | Yes | Yes |
| Yardage to layups/doglegs | Yes | Yes |
| Hazards and course targets | Yes | Yes |
| Pairs with Garmin Golf app | Yes | Yes |
| Green View with manual pin position | Yes | Yes |
| CT10 Automatic club tracking compatible (requires accessory) | Yes | Yes |
| Yardage to F/M/B (distance to front, middle and back of green) | Yes | Yes |
| Stat tracking (strokes, putts per round, greens and fairways hit) | Yes | Yes |
| Measures shot distance (calculates exact yardage for shots from anywhere on course) | manual | manual |
| Running Features | ||
| Run workouts | Yes | Yes |
| Running power | Yes | Yes |
| Race predictor | Yes | Yes |
| Foot pod capable | Yes | Yes |
| Running dynamics | Yes | Yes |
| Lactate threshold | yes (with compatible accessory) | yes (with compatible accessory) |
| Grade-adjusted pace | Yes | Yes |
| Trail run auto climb | Yes | Yes |
| Performance condition | Yes | Yes |
| Run/Walk/Stand detection | Yes | Yes |
| Stride length (real time) | Yes | Yes |
| PacePro™ Pacing Strategies | Yes | Yes |
| Vertical oscillation and ratio | Yes | Yes |
| Ground contact time and balance | yes (GCT balance with accessory) | yes (GCT balance with accessory) |
| GPS-based distance, time and pace | Yes | Yes |
| Cadence (provides real-time number of steps per minute) | Yes | Yes |
| What You'll Love | ||
| Display type | Monochrome, sunlight-visible, transflective memory-in-pixel (MIP) | AMOLED (always-on) |
| Water rating | 10 ATM | 10 ATM |
| Garmin Pay™ | Yes | Yes |
| LED flashlight | Yes | Yes |
| Multi-band GPS | Yes | Yes |
| Solar Charging | Yes | — |
| Training status | Yes | Yes |
| Training readiness | Yes | Yes |
| Pulse Ox blood oxygen | Yes | Yes |
| Sleep score and insights | Yes | Yes |
| Battery life (smartwatch mode) | Up to 28 daysUnlimited with solar | Up to 24 days (9 days always-on) |
| Activity Profiles | ||
| Gym | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing |
| Swim | Pool Swimming, Open Water Swimming | Pool Swimming, Open Water Swimming |
| Cycling | Biking, Road Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX | Biking, Road Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX |
| Wellness | Walking, Indoor Walking, Pilates, Yoga | Walking, Indoor Walking, Pilates, Yoga |
| Multisport | Triathlon | Triathlon |
| In the ring | Boxing, Mixed Martial Arts | Boxing, Mixed Martial Arts |
| Team sports | Basketball, Volleyball, Field Hockey, Ice Hockey, Football/Soccer, American Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball | Basketball, Volleyball, Field Hockey, Ice Hockey, Football/Soccer, American Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball |
| Motor sports | Motorcycling, Overlanding, Motocrossing, ATVing, Snowmobiling | 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 | 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 | 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 | Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing, XC Skate Skiing, Backcountry Skiing, Ice Skating, Snowshoeing |
| Indoor running | Treadmill Running, Indoor Track Running, Virtual Running | Treadmill Running, Indoor Track Running, Virtual Running |
| Outdoor running | Running, Outdoor Track Running, Trail Running, Obstacle Racing | Running, Outdoor Track Running, Trail Running, Obstacle Racing |
| Outdoor recreation | Hiking, Rucking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery | Hiking, Rucking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery |
| Other activity profiles | Tactical, Inline Skating | Jumpmaster, Tactical, Inline Skating |
| Swimming Features | ||
| Pool swim workouts | Yes | Yes |
| Time and distance alerts | Yes | Yes |
| Auto rest (pool swim only) | Yes | Yes |
| Drill logging (pool swim only) | Yes | Yes |
| Countdown start (pool swim only) | Yes | Yes |
| Underwater wrist-based heart rate | Yes | Yes |
| "Repeat on" rest timer (pool swim only) | Yes | Yes |
| Basic rest timer (up from 0) (pool swim only) | Yes | Yes |
| Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only) | Yes | Yes |
| Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories) | Yes | Yes |
| Open-water swim metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), calories) | Yes | Yes |
| Heart rate from external HRM (real-time during rests, interval and session stats during rests, and automatic heart rate download post-swim) | Yes | Yes |
| Tactical Features | ||
| XERO™ Locations | Yes | — |
| Dual grid coordinates | Yes | Yes |
| Kill switch | — | Yes |
| Stage timer | — | Yes |
| Stealth Mode | — | Yes |
| Ballistics solver | — | yes (unlock required) |
| Night vision mode | — | Yes |
| Outdoor Recreation | ||
| Tides | Yes | Yes |
| TracBack® | Yes | Yes |
| Sight 'N Go | Yes | Yes |
| Tide glance | Yes | Yes |
| Back to start | Yes | Yes |
| UltraTrac mode | Yes | Yes |
| Vertical speed | Yes | Yes |
| GPS coordinates | Yes | Yes |
| Reference point | Yes | Yes |
| Area calculation | Yes | Yes |
| Elevation profile | Yes | Yes |
| Projected waypoint | Yes | Yes |
| Total ascent/descent | Yes | Yes |
| Future elevation plot | Yes | Yes |
| Distance to destination | Yes | Yes |
| Expedition GPS Activity | Yes | Yes |
| Sun and moon information | Yes | Yes |
| Point-to-point navigation | Yes | Yes |
| Bread crumb trail in real time | Yes | Yes |
| Barometric trend indicator with Storm Alert | Yes | Yes |
| Wind meter compatible | — | Yes |
| Daily Smart Features | ||
| Calendar | Yes | Yes |
| Passcode | Yes | Yes |
| Connectivity | Bluetooth®, ANT+® | Bluetooth®, ANT+® |
| Garmin Share | Yes | Yes |
| Find My Phone | Yes | Yes |
| Find My Watch | Yes | Yes |
| VIRB® Remote | Yes | Yes |
| Morning report | Yes | Yes |
| Weather forecasts | Yes | Yes |
| Smart Notifications | Yes | Yes |
| Smart trainer control | Yes | Yes |
| Smartphone compatibility | iPhone®, Android™ | iPhone®, Android™ |
| Controls smartphone music | Yes | Yes |
| On-device Connect IQ™ Store | Yes | Yes |
| Pairs with Garmin Connect™ Mobile | Yes | Yes |
| Compatible with Garmin Messenger app | Yes | Yes |
| Battery saver (customizable low power watch) | Yes | Yes |
| Realtime settings sync with Garmin Connect™ mobile | Yes | Yes |
| Text response/reject phone call with text (Android™ only) | Yes | Yes |
| Connect IQ™ (downloadable watch faces, data fields and apps) | Yes | Yes |
| Red shift mode | — | Yes |
| View images from notifications on watch (Android™ only) | — | Yes |
| Activity Tracking Features | ||
| TrueUp™ | Yes | Yes |
| Move IQ™ | Yes | Yes |
| Step counter | Yes | Yes |
| Floors climbed | Yes | Yes |
| Calories burned | Yes | Yes |
| Distance traveled | Yes | Yes |
| Intensity minutes | Yes | Yes |
| Automatic rep counting | Yes | Yes |
| Garmin Connect™ Challenges app | yes (optional Connect IQ app) | yes (optional Connect IQ app) |
| Move alerts (displays on device after a period of inactivity) | Yes | Yes |
| Auto goal (learns your activity level and assigns a daily step goal) | Yes | Yes |
| Workout and Training Plans | ||
| HIIT workouts | Yes | Yes |
| Yoga workouts | Yes | Yes |
| Cardio workouts | Yes | Yes |
| Pilates workouts | Yes | Yes |
| Strength workouts | Yes | Yes |
| Garmin Running Coach Experts | Yes | Yes |
| Garmin Coach - Prebuilt Cycling Plans | Yes | Yes |
| Daily Suggested Workout - Cycling (Pace and Heart Rate Based) | Yes | Yes |
| Daily Suggested Workout - Running (Pace and Heart Rate Based) | Yes | Yes |
| On-screen workout animations | — | Yes |
| On-screen workout muscle maps | — | Yes |
| Health & Wellness Monitoring | ||
| Sleep | yes (advanced) | yes (advanced) |
| Hydration | yes (in Garmin Connect™ and optional Connect IQ™ widget) | yes (in Garmin Connect™ and optional Connect IQ™ widget) |
| Breathwork | Yes | Yes |
| Fitness age | Yes | Yes |
| Sleep coach | Yes | Yes |
| Nap detection | Yes | Yes |
| All-day stress | Yes | Yes |
| Women's health | yes (in Garmin Connect™ and optional Connect IQ™ widget) | yes (in Garmin Connect™ and optional Connect IQ™ widget) |
| Health snapshot | Yes | Yes |
| Respiration rate | Yes | Yes |
| Resting heart rate | Yes | Yes |
| Breathing variations | Yes | Yes |
| Relaxation reminders | Yes | Yes |
| Abnormal heart rate alerts | yes (high and low) | yes (high and low) |
| Relaxation breathing timer | Yes | Yes |
| Body Battery™ energy monitor | Yes | Yes |
| Wrist-based heart rate (constant, every second) | Yes | Yes |
| Safety and Tracking Features | ||
| Assistance | Yes | Yes |
| Live Event Sharing | Yes | Yes |
| Incident Detection during select activities | Yes | Yes |
| Incident detection alert on phone for wearables | Yes | Yes |
| Kid Activity Tracking Features | ||
| Toe-to-Toe™ Challenges app | yes (optional Connect IQ Toe-to-Toe™ Challenges app) | yes (optional Connect IQ Toe-to-Toe™ Challenges app) |
| Training, Planning and Analysis Features | ||
| % HRR | Yes | Yes |
| % HR max | Yes | Yes |
| HR zones | Yes | Yes |
| HR alerts | Yes | Yes |
| Shortcuts | Yes | Yes |
| HRV status | Yes | Yes |
| Load ratio | Yes | Yes |
| Manual lap | Yes | Yes |
| Rest timer | Yes | Yes |
| Auto max HR | Yes | Yes |
| Auto scroll | Yes | Yes |
| Finish time | Yes | Yes |
| HR calories | Yes | Yes |
| Voice alerts | Yes | Yes |
| Custom alerts | Yes | Yes |
| Physio TrueUp | Yes | Yes |
| Recovery time | Yes | Yes |
| Training load | Yes | Yes |
| VO2 Max (Run) | Yes | Yes |
| Course guidance | Yes | Yes |
| Training effect | Yes | Yes |
| Virtual Partner | Yes | Yes |
| Workout benefit | Yes | Yes |
| Race an Activity | Yes | Yes |
| Advanced workouts | Yes | Yes |
| Interval training | Yes | Yes |
| Race glance/widget | Yes | Yes |
| Training load focus | Yes | Yes |
| VO2 Max (Trail Run) | Yes | Yes |
| GPS speed and distance | Yes | Yes |
| Configurable lap alerts | Yes | Yes |
| Customizable data pages | Yes | Yes |
| Unified training status | Yes | Yes |
| Touch and/or button lock | Yes | Yes |
| Activity history on watch | Yes | Yes |
| Multisport auto transition | Yes | Yes |
| Downloadable training plans | Yes | Yes |
| Training effect (anaerobic) | Yes | Yes |
| Manual multisport activities | Yes | Yes |
| HRM running pace and distance | Yes | Yes |
| Heat and altitude acclimation | Yes | Yes |
| Customizable activity profiles | Yes | Yes |
| Auto Pause® automatic timer halt | Yes | Yes |
| Respiration rate (during exercise) | yes (with compatible accessory) | yes (with compatible accessory) |
| Auto Lap® interval tracking feature | Yes | Yes |
| Primary benefit (Training Effect labels) | Yes | Yes |
| Power Modes - customizable in-activity battery settings | Yes | Yes |
| HR broadcast (broadcasts HR data over ANT+® to paired devices) | Yes | Yes |
| Improved interval (includes open repeats, intervals data page, rest screen and auto detection) | Yes | Yes |
| Improved recovery time | — | Yes |
Wrist Fit
Garmin Instinct® 3 – 45 mm, Solar
Sits best on wrists ~47–64mm wide (≈ 12.6–17.1cm circumference).
Garmin Instinct® 3 – 50 mm, AMOLED, Tactical Edition
Sits best on wrists ~53–71mm wide (≈ 14.2–19.0cm circumference).
Frequently Asked Questions
Is the Garmin Instinct® 3 – 45 mm, Solar bigger than the Garmin Instinct® 3 – 50 mm, AMOLED, Tactical Edition?
The Garmin Instinct® 3 – 50 mm, AMOLED, Tactical Edition is bigger — 50mm vs 45mm case width.
Which fits a smaller wrist better, the Garmin Instinct® 3 – 45 mm, Solar or the Garmin Instinct® 3 – 50 mm, AMOLED, Tactical Edition?
The Garmin Instinct® 3 – 45 mm, Solar suits wrists around 47–64mm wide, and the Garmin Instinct® 3 – 50 mm, AMOLED, Tactical Edition around 53–71mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Garmin Instinct® 3 – 45 mm, Solar and Garmin Instinct® 3 – 50 mm, AMOLED, Tactical Edition 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.
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