Garmin
Forerunner® 165 vs Venu 4 45mm
Size, specs & wrist fit compared
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Which one fits you
On wrists narrower than about 47mm, the Forerunner® 165 is the safer pick — it stays proportionate down to roughly 45mm, where the Venu 4 45mm starts to hang over the edge. Above 47mm both sit cleanly, and the Venu 4 45mm gives you more presence.
The Venu 4 45mm wears larger than the Forerunner® 165 (45mm vs 43mm case), giving it more wrist presence — and needing a wider wrist to sit cleanly.
The Forerunner® 165 is the slimmer of the two (11.6mm vs 12.5mm), so it slides under a cuff more easily.
The Forerunner® 165 is thinner than 86% of the 43mm watches we track and the Venu 4 45mm than 70% of the 45mm ones — so both wear flatter than their widths suggest.
The Venu 4 45mm is 2mm wider, 2mm longer, 0.9mm thicker and 1g lighter than the Forerunner® 165. Both are circular.
Forerunner® 165
Venu 4 45mm
Case width
43mm
45mm+2mm
Lug-to-lug
43mm
45mm+2mm
Thickness
11.6mm
12.5mm+0.9mm
Weight
39g
38g−1g
Switch or add watches
Garmin
Forerunner® 165
Garmin
Venu 4 45mm
2D Dimension Schematics
Every case drawn to scale on a shared centre — from above, and in profile against the wrist.
Highlight
- Garmin Forerunner® 16543mm · 11.6mm thick
- Garmin Venu 4 45mm45mm · 12.5mm thick
3D preview
Forerunner® 165 vs Venu 4 45mm 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
Runtime for every power mode either watch publishes, 1 of them directly comparable.
Forerunner® 165Venu 4 45mm
Battery Saver Smartwatch
20 days—Smartwatch
11 days12 daysGPS-Only GNSS
19 hours—All-Systems GNSS
17 hours—
Specifications
The short version
7 key specs| Spec | GarminForerunner® 165 | GarminVenu 4 45mm |
|---|---|---|
| Case Width | 43mm | 45mm |
| Thickness | 11.6mm | 12.5mm |
| Weight | 39g | 38g |
| Shape | Circular | Circular |
| Display type | AMOLED (optional always-on mode) | AMOLED (optional always-on mode) |
| Battery life | Smartwatch mode: Up to 11 days Battery Saver Smartwatch mode: Up to 20 days GPS-Only GNSS mode: Up to 19 hours All-Systems GNSS mode: Up to 17 hours See Details | Smartwatch mode: Up to 12 days (4 days display always-on) Battery Saver Smartwatch mode: Up to 25 days GPS-Only GNSS mode: Up to 20 hours All-Systems GNSS mode: Up to 19 hours All-Systems GNSS mode with music: Up to 9 hours All-Systems GNSS mode + Multi-band: Up to 17 hours All-Systems GNSS mode + Multi-band with music: Up to 9 hours See Details |
| Released | 2024 | 2025 |
Every specification
466 specs| Spec | Garmin Forerunner® 165 | Garmin Venu 4 45mm |
|---|---|---|
| Overview | ||
| Family | Garmin | — |
| General | ||
| Battery life | Smartwatch mode: Up to 11 days Battery Saver Smartwatch mode: Up to 20 days GPS-Only GNSS mode: Up to 19 hours All-Systems GNSS mode: Up to 17 hours See Details | — |
| Battery type | Lithium ion | — |
| Display Size | 1.2" (30.4 mm) diameter | — |
| Color display | Yes | — |
| Lens Material | chemically strengthened glass | — |
| Bezel Material | fiber-reinforced polymer | — |
| Memory/History | 4 GB | — |
| Strap material | silicone | — |
| Charging method | Garmin proprietary plug charger | — |
| Large font option | Yes | — |
| Display resolution | 390 x 390 pixels | — |
| Quick Release bands | yes (20 mm, Industry standard) | — |
| Timer | — | Yes |
| Stopwatch | — | Yes |
| Time/date | — | Yes |
| Alarm clock | — | Yes |
| Touchscreen | — | Yes |
| Display type | — | AMOLED (optional always-on mode) |
| Water rating | — | Swim, 5 ATM |
| GPS Time Sync | — | Yes |
| Garmin Pay™ | — | Yes |
| Music storage | — | Yes |
| Garmin ECG app | — | Yes |
| LED flashlight | — | Yes |
| Multi-band GPS | — | Yes |
| Training status | — | yes (improved) |
| Wheelchair mode | — | Yes |
| Smart wake alarm | — | Yes |
| Training readiness | — | Yes |
| Sunrise/sunset times | — | Yes |
| Pulse Ox blood oxygen | — | yes (spot-check, and optional all-day acclimation and in sleep) |
| Sleep score and insights | — | Yes |
| Automatic daylight saving time | — | Yes |
| Battery life (smartwatch mode) | — | Up to 12 days |
| Make calls and send texts via voice | — | yes (with paired compatible smartphone) |
| Sensors | ||
| GPS | Yes | — |
| Compass | Yes | — |
| GLONASS | Yes | — |
| Galileo | Yes | — |
| Thermometer | Yes | — |
| Accelerometer | Yes | — |
| Ambient light sensor | 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 |
| Color shift | — | Yes |
| Connectivity | — | Bluetooth®, ANT+®, Wi-Fi® |
| Garmin Share | — | Yes |
| Hourly alert | — | Yes |
| Color filters | — | Yes |
| Find My Phone | — | Yes |
| Voice command | — | Yes |
| Evening report | — | Yes |
| Morning report | — | Yes |
| Red shift mode | — | Yes |
| Spoken watch face | — | 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 |
| 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 |
| Bluetooth phone calling and voice assistant support | — | 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 | 010-02863-20 | — |
| Product ID | 1055469 | — |
| Product Name | Forerunner® 165 | — |
| Release Date | 2/20/2024 | — |
| Product Variation | Black/Slate Gray | — |
| Price | — | 549.99 USD |
| Sale Price | — | 499.99 USD |
| 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 (in Garmin Connect™ and optional Connect IQ™ widget) |
| Breathwork | — | Yes |
| Meditation | — | Yes |
| Fitness age | — | Yes |
| Sleep coach | — | Yes |
| Health status | — | Yes |
| Nap detection | — | Yes |
| All-day stress | — | Yes |
| Women's health | — | yes (in Garmin Connect™ and optional Connect IQ™ widget) |
| Health snapshot | — | Yes |
| Jet lag adviser | — | Yes |
| Sleep alignment | — | Yes |
| Respiration rate | — | Yes |
| Skin temperature | — | Yes |
| Lifestyle logging | — | Yes |
| Resting heart rate | — | Yes |
| Breathing variations | — | Yes |
| Relaxation reminders | — | Yes |
| Past ovulation estimates | — | Yes |
| Abnormal heart rate alerts | — | yes (high and low) |
| Relaxation breathing timer | — | Yes |
| Body Battery™ energy monitor | — | Yes |
| Heart rate (constant, every second) | — | Yes |
| Cycling Features | ||
| Courses | Yes | — |
| Compatible with Varia™ lights | Yes | — |
| Compatible with Varia headlight camera | Yes | — |
| Speed and cadence sensor support (w/sensor) | Yes | — |
| Compatible with Varia™ radar (rear-facing radar) | Yes | — |
| Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories) | Yes | — |
| Pool swim workouts | — | 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 |
| Running Features | ||
| Run workouts | Yes | — |
| Running power | Yes | — |
| Race predictor | Yes | — |
| Foot pod capable | Yes | — |
| Running dynamics | 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 (but not balance) | — |
| GPS-based distance, time and pace | Yes | — |
| Course- and weather-specific race predictor | 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 | ||
| Touchscreen | Yes | — |
| Display type | AMOLED (optional always-on mode) | — |
| Water rating | 5 ATM | — |
| Garmin Pay™ | Yes | — |
| Pulse Ox blood oxygen | yes (spot-check, during sleep, all day) | — |
| Sleep score and insights | Yes | — |
| Battery life (smartwatch mode) | Up to 11 days | — |
| Weight | — | 38 g (56 g with included band) |
| Battery life | — | Smartwatch mode: Up to 12 days (4 days display always-on) Battery Saver Smartwatch mode: Up to 25 days GPS-Only GNSS mode: Up to 20 hours All-Systems GNSS mode: Up to 19 hours All-Systems GNSS mode with music: Up to 9 hours All-Systems GNSS mode + Multi-band: Up to 17 hours All-Systems GNSS mode + Multi-band with music: Up to 9 hours See Details |
| Battery type | — | Lithium ion |
| Display Size | — | 1.4" (35.3 mm) diameter |
| Case material | — | stainless steel and fiber-reinforced polymer |
| Color display | — | Yes |
| Lens material | — | Corning® Gorilla® Glass 3 |
| Physical size | — | 45 x 45 x 12.5 mm Fits wrists with a circumference of 135-200 mm |
| Bezel material | — | stainless steel |
| Memory/History | — | 8 GB |
| Strap material | — | silicone |
| Charging method | — | Garmin proprietary plug charger |
| Large font option | — | Yes |
| Display resolution | — | 454 x 454 pixels |
| Quick Release bands | — | yes (22 mm, Industry standard) |
| Built-in speaker/microphone | — | Yes |
| Activity Profiles | ||
| Gym | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing | — |
| Swim | Pool Swimming, Open Water Swimming | — |
| Cycling | Biking, Indoor Biking | — |
| Wellness | Walking, Pilates, Yoga, Indoor Walking | — |
| Racket sports | Tennis, Pickleball, Padel | — |
| Indoor running | Treadmill Running, Indoor Track Running, Virtual Running | — |
| Outdoor running | Running, Outdoor Track Running, Trail Running, Ultra Running | — |
| Outdoor recreation | Hiking | — |
| Assistance | — | Yes |
| Live event sharing | — | Yes |
| Incident detection during select activities | — | Yes |
| Incident detection alert on phone for wearables | — | Yes |
| Swimming Features | ||
| 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 | — |
| Outdoor Recreation | ||
| Auto rest | Yes | — |
| TracBack® | Yes | Yes |
| Back to start | Yes | Yes |
| Fish forecast | yes (via Connect IQ™) | — |
| UltraTrac mode | Yes | — |
| Area calculation | yes (via Connect IQ™) | — |
| Elevation profile | Yes | — |
| Total ascent/descent | Yes | — |
| Future elevation plot | Yes | — |
| Distance to destination | Yes | — |
| Sun and moon information | yes (via Connect IQ™) | — |
| Point-to-point navigation | Yes | Yes |
| Rest Timer (Ultra Run only) | Yes | — |
| Bread crumb trail in real time | Yes | Yes |
| Up Ahead | — | Yes |
| Daily Smart Features | ||
| Calendar | Yes | — |
| Passcode | Yes | — |
| Connectivity | Bluetooth®, ANT+® | — |
| Garmin Share | Yes | — |
| Find My Phone | Yes | — |
| Find My Watch | 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 | — |
| Find My Phone during GPS activity | 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 |
| Multisport workouts | — | Yes |
| Garmin cycling coach | — | Yes |
| Garmin fitness coach | — | Yes |
| Garmin running coach | — | Yes |
| Garmin Coach - Strength | — | Yes |
| Mixed session multisport | — | 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 - Cycling (heart rate based) | — | Yes |
| Daily suggested workout - Fitness (heart rate based) | — | Yes |
| Daily suggested workout - Running (heart rate based) | — | Yes |
| Daily suggested workout - Walking (heart rate 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 | — |
| % 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 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 |
| 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 |
| Workout and Training Plans | ||
| HIIT workouts | Yes | — |
| Yoga workouts | Yes | — |
| Cardio workouts | Yes | — |
| Pilates workouts | Yes | — |
| Strength workouts | Yes | — |
| Garmin Running Coach | yes (no strength add-on) | — |
| Garmin Running Coach Experts | Yes | — |
| Garmin Coach - Prebuilt Cycling Plans | Yes | — |
| Daily Suggested Workout - Running (Pace and Heart Rate Based) | Yes | — |
| Gym | — | Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Jump Roping |
| 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, Pilates, Yoga , Indoor Walking, Mobility, Meditation, Breathwork |
| Multisport | — | Triathlon, Duathlon, Brick, Pool Triathlon, Swim/Run, Mixed Session |
| 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, Fishing, Snorkeling |
| Racket sports | — | Tennis, Pickleball, Badminton, Squash, Table Tennis, Padel, Platform Tennis, Racquetball |
| Indoor running | — | Treadmill Running, Indoor Track Running, Virtual Running |
| Outdoor running | — | Running, Outdoor Track Running, Trail Running, Ultra Running, Obstacle Racing, Adventure Racing |
| Snow and winter | — | Skiing, Snowboarding, XC Classic Skiing, XC Skate Skiing, Ice Skating, Snowshoeing |
| Outdoor recreation | — | Hiking, Rucking, Mountaineering, Indoor Climbing, Bouldering, Horseback Riding, Golfing, Disc Golf, Archery |
| Other activity profiles | — | Inline Skating, Gaming. Breathwork |
| Health & Wellness Monitoring | ||
| Sleep | yes (advanced) | — |
| Hydration | yes (in Garmin Connect™ and optional Connect IQ™ widget) | — |
| Breathwork | Yes | — |
| Fitness age | 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 |
| Accelerometer | — | Yes |
| SatIQ™ technology | — | Yes |
| Ambient light sensor | — | Yes |
| Barometric altimeter | — | Yes |
| Pulse Ox blood oxygen saturation monitor | — | Yes |
| Garmin Elevate™ wrist heart rate monitor | — | Yes |
| Safety and Tracking Features | ||
| Assistance | Yes | — |
| Live Event Sharing | Android™ Only | — |
| Incident Detection during select activities | Yes | — |
| Incident detection alert on phone for wearables | Yes | — |
| Gaming Activity | — | Yes |
| GameOn™ app compatible | — | 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 | — |
| HRV status | Yes | — |
| Manual lap | Yes | — |
| Rest timer | Yes | — |
| Auto max HR | Yes | — |
| Finish time | Yes | — |
| HR calories | Yes | — |
| Voice alerts | Yes | — |
| Physio TrueUp | Yes | — |
| Recovery time | Yes | — |
| VO2 Max (Run) | Yes | — |
| Course guidance | Yes | — |
| Training effect | Yes | — |
| Advanced workouts | Yes | — |
| Interval training | Yes | — |
| Race glance/widget | Yes | — |
| VO2 Max (Trail Run) | Yes | — |
| GPS speed and distance | Yes | — |
| Configurable lap alerts | 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 and Breathwork only | — |
| Auto Lap® interval tracking feature | Yes | — |
| Primary benefit (Training Effect labels) | Yes | — |
| HR broadcast (broadcasts HR data over ANT+® to paired devices) | Yes | — |
| Run workouts | — | Yes |
| Running power | — | Yes |
| Race predictor | — | Yes |
| Foot pod capable | — | Yes |
| Running dynamics | — | Yes |
| Lactate threshold | — | Yes |
| 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 |
| Projected race time and pace | — | Yes |
| Vertical oscillation and ratio | — | Yes |
| Ground contact time and balance | — | yes (GCT balance with accessory) |
| GPS-based distance, time and pace | — | Yes |
| Course- and weather-specific race predictor | — | Yes |
| Cadence (provides real-time number of steps per minute) | — | Yes |
| Variant | ||
| Color | — | Silver with Silver Gray Silicone Band |
| Case Size | — | 45 mm |
| Available Colors | — | Slate with Black Silicone Band; Slate with Black Silicone Band and Brown Leather Band; Silver with Citron Silicone band ; Silver with Silver Gray Silicone Band; Silver with Black Silicone Band |
| Gaming Features | ||
| TrueUp™ | — | Yes |
| Move IQ™ | — | Yes |
| Step counter | — | Yes |
| Floors climbed | — | 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 |
| Golfing Features | ||
| Auto rest | — | Yes |
| UltraTrac mode | — | Yes |
| Vertical speed | — | Yes |
| Elevation profile | — | Yes |
| Total ascent/descent | — | Yes |
| Future elevation plot | — | Yes |
| Distance to destination | — | Yes |
| Sun and moon information | — | Yes |
| Barometric trend indicator with storm alert | — | Yes |
| Mapping & Navigation | ||
| Courses | — | Yes |
| Race an activity | — | Yes |
| Power meter compatible | — | Yes |
| Power curve and % FTP workouts | — | Yes |
| Compatible with Varia™ lights | — | Yes |
| Compatible with Varia™ headlight camera | — | 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 |
| Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories) | — | Yes |
Wrist Fit
Garmin Forerunner® 165
Sits best on wrists ~45–61mm wide (≈ 12.0–16.3cm circumference).
Garmin Venu 4 45mm
Sits best on wrists ~47–64mm wide (≈ 12.6–17.1cm circumference).
Frequently Asked Questions
Is the Garmin Forerunner® 165 bigger than the Garmin Venu 4 45mm?
The Garmin Venu 4 45mm is bigger — 45mm vs 43mm case width.
Which fits a smaller wrist better, the Garmin Forerunner® 165 or the Garmin Venu 4 45mm?
The Garmin Forerunner® 165 suits wrists around 45–61mm wide, and the Garmin Venu 4 45mm around 47–64mm. The one with the smaller lower bound is the safer pick for a small wrist.
Can I see the Garmin Forerunner® 165 and Garmin Venu 4 45mm 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.