Garmin
fēnix® 8 – 51 mm, Solar vs Venu® 3
Size, specs & wrist fit compared
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Which one fits you
On wrists narrower than about 54mm, the Venu® 3 is the safer pick — it stays proportionate down to roughly 47mm, where the fēnix® 8 – 51 mm, Solar starts to hang over the edge. Above 54mm both sit cleanly, and the fēnix® 8 – 51 mm, Solar gives you more presence.
The fēnix® 8 – 51 mm, Solar wears larger than the Venu® 3 (51mm vs 45mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The Venu® 3 is the slimmer of the two (12mm vs 15.4mm), so it slides under a cuff more easily.
On the wrist the Venu® 3 feels lighter (30g vs 95g, case only).
The fēnix® 8 – 51 mm, Solar is middle-of-the-pack for thickness among the 54 51mm watches in the database.
Among the 385 45mm watches we hold thickness for, the Venu® 3 is thinner than 76%, so it wears flatter than its width suggests.
The fēnix® 8 – 51 mm, Solar is 6mm wider, 6mm longer, 3.4mm thicker and 65g heavier than the Venu® 3. Both are circular.
fēnix® 8 – 51 mm, Solar
Venu® 3
Case width
51mm
45mm−6mm
Lug-to-lug
51mm
45mm−6mm
Thickness
15.4mm
12mm−3.4mm
Weight
95g
30g−65g
Switch or add watches
Garmin
fēnix® 8 – 51 mm, Solar
Garmin
Venu® 3
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist.
Highlight
- Garmin fēnix® 8 – 51 mm, Solar51mm · 15.4mm thick
- Garmin Venu® 345mm · 12mm thick
3D preview
fēnix® 8 – 51 mm, Solar vs Venu® 3 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 fēnix® 8 – 51 mm, Solar lasts 2.1× as long as the Venu® 3 (30 days against 14 days).
fēnix® 8 – 51 mm, SolarVenu® 3
Expedition GPS
50 days +118 days—Battery Saver
48 days +107 days624 hoursSmartwatch
30 days +48 days14 daysMax Battery GPS
186 hours +653 hours—GPS Only
95 hours +149 hours—All Satellite Systems
68 hours +92 hours—All Satellite Systems + Multi-band
52 hours +65 hours—GPS
—26 hoursAll Satellite Systems + Music
18 hours—
Amber figures are the solar-assisted runtime the manufacturer publishes for that mode.
Specifications
The short version
7 key specs| Spec | Garminfēnix® 8 – 51 mm, Solar | GarminVenu® 3 |
|---|---|---|
| Case Width | 51mm | 45mm |
| Thickness | 15.4mm | 12mm |
| Weight | 95g | 30g |
| Shape | Circular | Circular |
| Display type | Sunlight-visible, transflective memory-in-pixel (MIP) | OLED/AMOLED |
| Battery life | Smartwatch: Up to 30 days/48 days with solar* Battery Saver Watch Mode: Up to 48 days/107 days with solar* GPS Only: Up to 95 hours/149 hours with solar** All Satellite Systems: Up to 68 hours/92 hours with solar** All Satellite Systems + Multi-band: Up to 52 hours/65 hours with solar*** All Satellite Systems + Music: Up to 18 hours Max Battery GPS: Up to 186 hours/653 hours with solar** Expedition GPS: Up to 50 days/118 days 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 mode: Up to 14 days (5 days display always-on) Battery Saver Smartwatch mode: Up to 26 days GPS-Only GNSS mode: Up to 26 hours All-Systems GNSS mode: Up to 20 hours All-Systems GNSS mode with music: Up to 11 hours See Details |
| Released | 2024 | 2023 |
Every specification
466 specs| Spec | Garmin fēnix® 8 – 51 mm, Solar | Garmin Venu® 3 |
|---|---|---|
| Overview | ||
| Family | Garmin | Garmin |
| General | ||
| Battery life | Smartwatch: Up to 30 days/48 days with solar* Battery Saver Watch Mode: Up to 48 days/107 days with solar* GPS Only: Up to 95 hours/149 hours with solar** All Satellite Systems: Up to 68 hours/92 hours with solar** All Satellite Systems + Multi-band: Up to 52 hours/65 hours with solar*** All Satellite Systems + Music: Up to 18 hours Max Battery GPS: Up to 186 hours/653 hours with solar** Expedition GPS: Up to 50 days/118 days 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 mode: Up to 14 days (5 days display always-on) Battery Saver Smartwatch mode: Up to 26 days GPS-Only GNSS mode: Up to 26 hours All-Systems GNSS mode: Up to 20 hours All-Systems GNSS mode with music: Up to 11 hours See Details |
| Battery type | Lithium ion | Lithium ion |
| Display Size | 1.4” (35.56 mm) diameter | 1.4" (35.4 mm) diameter |
| Case material | fiber-reinforced polymer with metal rear cover | fiber-reinforced polymer |
| Color display | Yes | Yes |
| Lens Material | Power Sapphire™ | Corning® Gorilla® Glass 3 |
| Bezel Material | titanium | stainless steel |
| Memory/History | 32 GB | 8 GB |
| Strap material | silicone | silicone |
| Charging method | Garmin proprietary plug charger | Garmin proprietary plug charger |
| Large font option | Yes | Yes |
| Display resolution | 280 x 280 pixels | 454 x 454 pixels |
| Built-in speaker/microphone | Yes | Yes |
| Leakproof inductive buttons | Yes | — |
| QuickFit® watch band compatible | included (26 mm) | — |
| Quick Release bands | — | yes (22 mm, Industry standard) |
| Sensors | ||
| GPS | Yes | Yes |
| QZSS | Yes | — |
| BeiDou | Yes | — |
| Compass | Yes | Yes |
| GLONASS | Yes | Yes |
| Galileo | Yes | Yes |
| Gyroscope | Yes | Yes |
| Thermometer | Yes | yes (tempe™ sensor required) |
| Depth sensor | yes (to 40 m) | — |
| Accelerometer | Yes | Yes |
| SatIQ™ Technology | Yes | — |
| Ambient light sensor | Yes | Yes |
| Barometric altimeter | Yes | Yes |
| Pulse Ox Blood Oxygen Saturation Monitor | Yes | Yes |
| Garmin Elevate™ wrist heart rate monitor | Yes | Yes |
| has GPS | — | Yes |
| has a compass | — | Yes |
| Has a barometer | — | Yes |
| has a gyroscope | — | Yes |
| Has a cadence sensor | — | No |
| has an accelerometer | — | Yes |
| Monitors perspiration | — | No |
| Has a heart rate monitor | — | Yes |
| Has a temperature sensor | — | Yes |
| Monitors blood oxygenation levels | — | Yes |
| Product Info | ||
| Main SKU | 010-02907-20 | 010-02784-01 |
| Product ID | 1390829 | 873008 |
| Product Name | fēnix® 8 – 51 mm, Solar | Venu® 3 |
| Release Date | 8/27/2024 | — |
| Product Variation | Sapphire, Titanium with Amp Yellow/Graphite Silicone Band | Slate Stainless Steel Bezel with Black Case and Silicone 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 |
| Diving Features | ||
| PO2 | up to 1.6 with customizable Deco settings | — |
| Tides | Yes | — |
| Backlight | yes (configurable intensity; always on) | — |
| Gas mixes | Air, Nitrox (21-40% Oxygen) | — |
| APNEA mode | Yes | — |
| Deep Stops | yes (using custom Gradient Factors) | — |
| No fly time | Yes | — |
| Safety Stop | yes (customizable off/3min/5min) | — |
| Dive planner | yes (Basic NDL & Gas Planner) | — |
| Nitrox support | Yes | — |
| Alerts & alarms | yes (vibration only) | — |
| Single-gas mode | Yes | — |
| 3-axis dive compass | yes with adjustable heading, quick change to 90R, 90L, and Reciprocal. Indicates degrees and direction back to set heading. | — |
| Auto start/end dive | Yes | — |
| Decompression model | Bühlmann ZHL-16c with Gradient Factors | — |
| Missed Deco Lockout | yes (can be disabled prior to dive with user acknowledgement) | — |
| Custom end-dive timeout | yes (20 sec to 10 min) | — |
| Customizable conservatism | yes (Low/Medium/High) | — |
| Surface diver status widget | yes (Surface Interval, no fly time, N2 loading, CNS, OTU, and Tissue Compartment status) | — |
| Automatic altitude adjustment | Yes | — |
| Dive ascent/descent rate indicator | Yes | — |
| Dive activity maximum operating depth | 40 meters | — |
| Sync dive log to Garmin Dive™ Mobile app | Yes | — |
| Automatically saves dive entry and exit locations | Yes | — |
| Boating Features | ||
| Wearable trolling motor remote | Yes | — |
| Cycling Features | ||
| Courses | Yes | — |
| Power guide | Yes | — |
| MTB Grit & Flow | Yes | — |
| Race an activity | Yes | — |
| Power meter compatible | Yes | Yes |
| Advanced cycling dynamics | Yes | — |
| Power curve and % FTP workouts | Yes | — |
| Compatible with Varia™ lights | Yes | Yes |
| FTP (Functional Threshold Power) | yes (with compatible accessory) | — |
| Compatible with Varia headlight camera | Yes | — |
| Speed and cadence sensor support (w/sensor) | Yes | yes (using ANT+ or BLE) |
| Cycle Map (routable cycling-specific street map) | Yes | — |
| Bike lap and lap maximum power (with power sensor) | 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 | — |
| Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories) | Yes | Yes |
| Golfing Features | ||
| PinPointer | Yes | Yes |
| Swing Tempo | Yes | — |
| Custom targets | Yes | — |
| Tempo Training | Yes | — |
| Virtual caddie | Yes | — |
| Full vector map | Yes | — |
| Handicap scoring | Yes | — |
| Tournament legal | Yes | Yes |
| Digital scorecard | Yes | Yes |
| Garmin AutoShot™ | Yes | Yes |
| PlaysLike distance | Yes | — |
| Round timer/odometer | Yes | Yes |
| Auto CourseView updates | 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 |
| Preloaded with 43,000 courses worldwide | Yes | — |
| Green Contours (with Garmin Golf membership) | 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 |
| Wind speed and direction (requires connection to Garmin Golf app) | Yes | — |
| Touch-targeting (touch target on display to see the distance to any point) | Yes | — |
| Measures shot distance (calculates exact yardage for shots from anywhere on course) | automatic | automatic |
| Running Features | ||
| Hill score | Yes | — |
| Run workouts | Yes | Yes |
| Running power | Yes | Yes |
| Race predictor | Yes | — |
| Foot pod capable | Yes | Yes |
| Running dynamics | Yes | Yes |
| Lactate threshold | yes (with compatible accessory) | — |
| Grade-adjusted pace | Yes | — |
| Trail run auto climb | Yes | — |
| Performance condition | Yes | — |
| Run/Walk/Stand detection | Yes | Yes |
| Stride length (real time) | Yes | — |
| PacePro™ Pacing Strategies | Yes | — |
| Vertical oscillation and ratio | Yes | Yes |
| Ground contact time and balance | yes (GCT balance with accessory) | — |
| GPS-based distance, time and pace | Yes | Yes |
| Course- and weather-specific race predictor | Yes | — |
| Cadence (provides real-time number of steps per minute) | Yes | Yes |
| What You'll Love | ||
| Touchscreen | Yes | Yes |
| Display type | Sunlight-visible, transflective memory-in-pixel (MIP) | AMOLED (optional always-on mode) |
| Water rating | 10 ATM | Swim, 5 ATM |
| Garmin Pay™ | Yes | Yes |
| Music storage | Yes | Yes |
| Garmin ECG App | Yes | Yes |
| LED flashlight | Yes | — |
| Multi-band GPS | Yes | — |
| Solar Charging | Yes | — |
| Training status | Yes | — |
| Built-in mapping | Yes | — |
| Training readiness | Yes | — |
| Pulse Ox blood oxygen | Yes | yes (spot-check, and optionally all-day and in sleep) |
| Sleep score and insights | Yes | Yes |
| Battery life (smartwatch mode) | Up to 30 days (48 days with solar) | Up to 14 days |
| Make calls and send texts via voice | Yes | Yes |
| Wheelchair mode | — | Yes |
| Activity Profiles | ||
| Gym | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Jump Roping | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Jump Roping |
| Dive | Scuba Diving (single gas), Apnea Diving, Depth App | — |
| 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, Indoor Biking, eBiking, Handcycling, Indoor Handcycling |
| Wellness | Walking, Indoor Walking, Pilates, Yoga | Walking, Pilates, Yoga, Indoor Walking |
| Multisport | Swimming/Running, 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 | — |
| On the Water | Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Sailing, Water Skiing, Wakeboarding, Wakesurfing, Tubing, Snorkeling, Whitewater | Stand Up Paddleboarding, Rowing |
| 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, XC Classic Skiing, Snowshoeing |
| Indoor running | Treadmill Running, Indoor Track Running, Virtual Running | Treadmill Running, Indoor Track Running |
| Outdoor running | Running, Outdoor Track Running, Trail Running, Ultra Running, Obstacle Racing | Running |
| Outdoor recreation | Hiking, Rucking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery | Hiking, Indoor Climbing, Bouldering, Disc Golf |
| Other activity profiles | Inline Skating | — |
| Swimming Features | ||
| Pool swim workouts | Yes | — |
| Critical swim speed | Yes | — |
| Time and distance alerts | Yes | Yes |
| Auto rest (pool swim only) | Yes | Yes |
| Drill logging (pool swim only) | Yes | — |
| Pacing alerts (pool swim only) | Yes | — |
| Countdown start (pool swim only) | Yes | — |
| Underwater wrist-based heart rate | Yes | Yes |
| "Repeat on" rest timer (pool swim only) | 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 (with HRM-Tri, HRM-Swim, HRM-Pro or HRM-Pro Plus) | — |
| Tactical Features | ||
| Dual grid coordinates | Yes | — |
| Outdoor Recreation | ||
| Tides | Yes | — |
| Up Ahead | Yes | — |
| Auto rest | Yes | — |
| TracBack® | Yes | — |
| Sight 'N Go | Yes | — |
| Tide glance | Yes | — |
| Back to start | Yes | Yes |
| Fish forecast | Yes | yes (via Connect IQ™) |
| Explore Nearby | Yes | — |
| UltraTrac mode | Yes | — |
| Vertical speed | Yes | — |
| GPS coordinates | Yes | — |
| Area calculation | yes (via Connect IQ™) | yes (via Connect IQ™) |
| Elevation profile | Yes | — |
| Projected waypoint | Yes | — |
| Total ascent/descent | Yes | Yes |
| Future elevation plot | Yes | — |
| NextFork™ navigation | Yes | — |
| Distance to destination | Yes | — |
| Expedition GPS Activity | Yes | — |
| Sun and moon information | Yes | yes (via Connect IQ™) |
| Point-to-point navigation | Yes | — |
| Preloaded ski resort maps | Yes | — |
| ClimbPro™ Ascent Planner | Yes | — |
| Rest Timer (Ultra Run only) | Yes | — |
| Preloaded road and trail maps | Yes | — |
| Bread crumb trail in real time | Yes | — |
| Downloadable cartography support | Yes | — |
| Barometric trend indicator with Storm Alert | Yes | — |
| Daily Smart Features | ||
| Stocks | Yes | — |
| Calendar | Yes | Yes |
| Passcode | Yes | Yes |
| Connectivity | Bluetooth®, ANT+®, Wi-Fi® | Bluetooth®, ANT+®, Wi-Fi® |
| Garmin Share | Yes | — |
| Find My Phone | Yes | Yes |
| Find My Watch | Yes | Yes |
| Voice command | 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 |
| Plays and controls watch music | Yes | Yes |
| Find My Phone during GPS activity | Yes | Yes |
| Pairs with Garmin Connect™ Mobile | Yes | Yes |
| Compatible with Garmin Messenger app | Yes | Yes |
| Battery saver (customizable low power watch) | Yes | Yes |
| Bluetooth phone calling and voice assistant support | Yes | Yes |
| Realtime settings sync with Garmin Connect™ mobile | Yes | Yes |
| View images from notifications on watch (Android™ only) | 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 |
| 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 |
| 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 |
| Push tracker | — | Yes |
| Weight shift alert | — | 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 Cycling Coach | Yes | — |
| Garmin Running Coach | Yes | — |
| Garmin Coach - Strength | Yes | — |
| Garmin Running Coach Experts | Yes | Yes |
| On-screen workout animations | Yes | Yes |
| On-screen workout muscle maps | Yes | 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 | — |
| Workouts for wheelchair users | — | Yes |
| Health & Wellness Monitoring | ||
| Sleep | yes (advanced) | yes (advanced) |
| Hydration | yes (in Garmin Connect™ and optional Connect IQ™ widget) | Yes |
| Breathwork | Yes | Yes |
| Meditation | 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 |
| Health snapshot | Yes | Yes |
| Jet lag adviser | Yes | Yes |
| Respiration rate | Yes | Yes |
| Skin temperature | Yes | Yes |
| Resting heart rate | Yes | Yes |
| Breathing variations | 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 |
| Relaxation reminders | — | Yes |
| Safety and Tracking Features | ||
| Assistance | Yes | Yes |
| Live Event Sharing | Yes | — |
| Incident Detection during select activities | Yes | Yes |
| Incident detection alert on phone for wearables | Yes | Yes |
| Training, Planning and Analysis Features | ||
| % HRR | Yes | — |
| % HR max | Yes | Yes |
| HR zones | Yes | Yes |
| HR alerts | Yes | Yes |
| Shortcuts | Yes | — |
| HRV status | Yes | Yes |
| Load ratio | Yes | — |
| Manual lap | Yes | Yes |
| Rest timer | Yes | — |
| Auto max HR | Yes | — |
| Auto scroll | Yes | Yes |
| Finish time | Yes | — |
| HR calories | Yes | Yes |
| Voice alerts | Yes | Yes |
| Custom alerts | Yes | — |
| Physio TrueUp | Yes | Yes |
| Recovery time | Yes | Yes |
| Training load | Yes | — |
| VO2 Max (Run) | Yes | Yes |
| Course guidance | Yes | — |
| Endurance score | Yes | — |
| Training effect | Yes | — |
| Virtual Partner | Yes | — |
| Workout benefit | Yes | Yes |
| Race an Activity | Yes | — |
| Realtime stamina | Yes | — |
| Advanced workouts | Yes | Yes |
| Interval training | Yes | Yes |
| Race glance/widget | Yes | — |
| Training load focus | Yes | — |
| VO2 Max (Trail Run) | Yes | — |
| Garmin Live Segments | Yes | — |
| Strava Live Segments | Yes | — |
| GPS speed and distance | Yes | Yes |
| Configurable lap alerts | Yes | — |
| Customizable data pages | Yes | Yes |
| Unified training status | Yes | — |
| Touch and/or button lock | Yes | Yes |
| Activity history on watch | Yes | Yes |
| Multisport auto transition | Yes | — |
| Downloadable training plans | Yes | Yes |
| Training effect (anaerobic) | Yes | — |
| Manual multisport activities | Yes | — |
| HRM running pace and distance | Yes | Yes |
| Heat and altitude acclimation | Yes | — |
| Customizable activity profiles | Yes | Yes |
| Trendline™ Popularity Routing | Yes | — |
| Auto Pause® automatic timer halt | Yes | Yes |
| Respiration rate (during exercise) | yes (with compatible accessory) | yoga, breathwork, meditation and archery only |
| Auto Lap® interval tracking feature | Yes | Yes |
| Primary benefit (Training Effect labels) | Yes | — |
| Round-trip course creator (running/cycling) | Yes | — |
| Power Modes - customizable in-activity battery settings | Yes | — |
| HR broadcast (broadcasts HR data over ANT+® to paired devices) | Yes | yes (using ANT+ or BLE) |
| Improved interval (includes open repeats, intervals data page, rest screen and auto detection) | Yes | Yes |
| 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) | yes (with compatible accessory) | — |
| Improved recovery time | — | yes (limited) |
| Design | ||
| width | — | 45 |
| height | — | 45 |
| volume | — | 24.3 cm³ |
| weight | — | 47 g |
| thickness | — | 12 |
| ATM rating | — | 5 ATM |
| resolution | — | 454 x 454 px |
| screen size | — | 1.4 inches |
| Display type | — | OLED/AMOLED |
| Has a display | — | Yes |
| pixel density | — | 458 ppi |
| width of band | — | 22 mm |
| water resistance | — | Waterproof |
| Always-On Display | — | Yes |
| has a touch screen | — | Yes |
| is designed for kids | — | No |
| Gorilla Glass version | — | Gorilla Glass 3 |
| waterproof depth rating | — | 50 m |
| Watch band is replaceable | — | Yes |
| Has sapphire glass display | — | No |
| maximum operating temperature | — | 55 °C |
| has branded damage-resistant glass | — | Yes |
| lowest potential operating temperature | — | -20 °C |
| Battery | ||
| charge time | — | 1 hours |
| battery life | — | 14 days |
| battery power | — | 297 mAh |
| has wireless charging | — | No |
| has a removable battery | — | No |
| battery life with GPS on | — | 26 hours |
| Has a solar power battery | — | No |
| has a rechargeable battery | — | Yes |
| battery life in power save mode | — | 624 hours |
| Features | ||
| CPU speed | — | 4 x 1.5 GHz |
| release date | — | 2023-08-30 |
| Has a stopwatch | — | Yes |
| Has smart alarm | — | No |
| warranty period | — | 1 years |
| Has call control | — | Yes |
| Has silent alarm | — | Yes |
| has HRV tracking | — | Yes |
| internal storage | — | 8GB |
| measures VO2 max | — | Yes |
| Has notifications | — | Yes |
| Has ECG technology | — | Yes |
| Locates your phone | — | Yes |
| has a front camera | — | No |
| has fall detection | — | Yes |
| has voice commands | — | No |
| Acquires GPS faster | — | Yes |
| Has vibrating alerts | — | Yes |
| shows readiness level | — | Yes |
| Can be used to answer calls | — | Yes |
| measures resting heart rate | — | Yes |
| has irregular heart rate warnings | — | Yes |
| has fast/slow heart rate notifications | — | Yes |
| Has a built-in camera remote control function | — | No |
| Languages | ||
| Device languages | — | Arabic, Bulgarian, Croatian, Czech, Danish, Dutch, English (US), Estonian, Finnish, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Latvian, Lithuanian, Malay, Norwegian, Polish, Portuguese (Brazil), Portuguese (EU), Romanian, Russian, Simplified Chinese, Slovak, Slovenian, Spanish (International), Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese |
| Connectivity | ||
| has NFC | — | Yes |
| Wi-Fi version | — | Wi-Fi 5 (802.11ac) |
| supports ANT+ | — | Yes |
| supports Wi-Fi | — | Yes |
| supports Galileo | — | Yes |
| Bluetooth version | — | 5.3 |
| has a cellular module | — | No |
| Is compatible with iOS | — | Yes |
| Is compatible with Android | — | Yes |
| Miscellaneous | ||
| has aptX | — | No |
| Has auto pause | — | Yes |
| Available on PC | — | Yes |
| Is compatible with Windows | — | Yes |
| Is compatible with Mac OS X | — | Yes |
| has an external memory slot | — | No |
| Compatible with smart scales | — | Yes |
| has a battery level indicator | — | Yes |
| Provides the sunrise/sunset time | — | Yes |
| has a socket for a 3.5 mm audio jack | — | No |
| Compatible with external heart rate monitors | — | Yes |
| App & Software | ||
| Ad-free | — | Yes |
| Free app | — | Yes |
| Tracks BMI | — | Yes |
| Has coaching | — | Yes |
| Includes maps | — | Yes |
| Supports routes | — | Yes |
| Has achievements | — | Yes |
| Has goal setting | — | Yes |
| Has live tracking | — | Yes |
| Has exercise diary | — | Yes |
| Predicts ovulation | — | Yes |
| Can be personalised | — | Yes |
| Has weight tracking | — | Yes |
| Predicts start date | — | Yes |
| Tracks water intake | — | Yes |
| Has inactivity alerts | — | Yes |
| Has period notifications | — | Yes |
| Has temperature tracking | — | Yes |
| Doesn’t require account | — | No |
| Provides activity reports | — | Yes |
| Displays fertile window notifications | — | Yes |
| Counts how many calories you've burned | — | Yes |
| Gaming Features | ||
| Gaming Activity | — | Yes |
| GameOn™ app compatible | — | Yes |
| Activity tracking | ||
| Measures pace | — | Yes |
| Tracks distance | — | Yes |
| Tracks elevation | — | Yes |
| Designed for golf | — | Yes |
| Tracks your sleep | — | Yes |
| Tracks steps taken | — | Yes |
| Designed for diving | — | No |
| Has a route tracker | — | Yes |
| Has exercise tagging | — | Yes |
| Has multi-sport mode | — | No |
| Tracks calorie intake | — | Yes |
| Provides sleep reports | — | Yes |
| Detects activities automatically | — | Yes |
| Has a stroke counter for swimming | — | Yes |
Wrist Fit
Garmin fēnix® 8 – 51 mm, Solar
Sits best on wrists ~54–73mm wide (≈ 14.4–19.5cm circumference).
Garmin Venu® 3
Sits best on wrists ~47–64mm wide (≈ 12.6–17.1cm circumference).
Frequently Asked Questions
Is the Garmin fēnix® 8 – 51 mm, Solar bigger than the Garmin Venu® 3?
The Garmin fēnix® 8 – 51 mm, Solar is bigger — 51mm vs 45mm case width.
Which fits a smaller wrist better, the Garmin fēnix® 8 – 51 mm, Solar or the Garmin Venu® 3?
The Garmin fēnix® 8 – 51 mm, Solar suits wrists around 54–73mm wide, and the Garmin Venu® 3 around 47–64mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Garmin fēnix® 8 – 51 mm, Solar and Garmin Venu® 3 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.