WatchFitTool

Garmin Venu 4 45mm vs Oppo Watch S

Size, specs & wrist fit compared

Garmin Venu 4 45mm010-03014-01
Garmin Venu 4 45mm
Oppo Watch S
Oppo Watch S

As an Amazon Associate, WatchFitTool earns from qualifying purchases.

Which one fits you

Both need much the same wrist — roughly 47–64mm across the flat of the wrist. Neither will fit where the other won't, so decide on thickness, weight and features instead.

The Garmin Venu 4 45mm and Oppo Watch S share a near-identical 45mm case, so wrist presence comes down to thickness, lug-to-lug and weight.

The Oppo Watch S is the slimmer of the two (8.9mm vs 12.5mm), so it slides under a cuff more easily.

On the wrist the Oppo Watch S feels lighter (35g vs 38g, case only).

The Garmin Venu 4 45mm is thinner than 70% of the 385 45mm watches we hold thickness for, the Oppo Watch S than 100% — so both wear flatter than their widths suggest.

The Garmin Venu 4 45mm is 3.6mm thicker and 3g heavier than the Oppo Watch S. Both are circular.

Garmin

Venu 4 45mm

Oppo

Watch S

Case width
45mm
45mmsame
Lug-to-lug
45mm
45mmsame
Thickness
12.5mm
8.9mm−3.6mm
Weight
38g
35g−3g

Switch or add watches

Garmin Venu 4 45mm

Garmin

Venu 4 45mm

Oppo Watch S

Oppo

Watch S

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 around

Garmin Venu 4 45mm

Case 45.0mm · Lug-to-lug 45.0mm · Thickness 12.5mm · 38g

Balanced Fit

45mm on a 55mm wrist

10:09TUE 12lug to lug 45.0mmyour wrist 55.0mm

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 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. 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. 2. Around — a tape, or a strip of paper marked and held against a ruler, snug the whole way round.
Complete Wrist Measurement Guide →
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 measurements
  • Across the wrist5.0mm spare each side

    Comfortable, with visible skin either side.

  • Off the wrist12.5mm off the skin

    Normal sports-watch height for a wrist this size. (12.5mm 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 wrist38g

    Light enough to forget you have it on. (0.7g per mm of wrist)

Oppo Watch S

Case 45.0mm · Lug-to-lug 45.0mm · Thickness 8.9mm · 35g

Balanced Fit

45mm on a 55mm wrist

10:09TUE 12lug to lug 45.0mmyour wrist 55.0mm

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 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. 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. 2. Around — a tape, or a strip of paper marked and held against a ruler, snug the whole way round.
Complete Wrist Measurement Guide →
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 measurements
  • Across the wrist5.0mm spare each side

    Comfortable, with visible skin either side.

  • Off the wrist8.9mm off the skin

    Sits low enough to disappear under a cuff. (8.9mm 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 wrist35g

    Light enough to forget you have it on. (0.6g 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
From above — same centre, true scale
From the side — how far each sits off the wrist
  • Garmin Venu 4 45mm45mm · 12.5mm thick
  • Oppo Watch S45mm · 8.9mm thick

3D preview

Garmin Venu 4 45mm vs Oppo Watch S on a wrist

Sized to your own wrist, turned any way you like.

Open 3D try-on

Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.

Battery life compared

Furthest apart in Smartwatch mode, where the Garmin Venu 4 45mm lasts 1.7× as long as the Oppo Watch S (12 days against 7 days).

Garmin Venu 4 45mmOppo Watch S

  • Smartwatch

    12 days
    7 days

Specifications

The short version

6 key specs
SpecGarminVenu 4 45mmOppoWatch S
Case Width45mm45mm
Thickness12.5mm8.9mm
Weight38g35g
ShapeCircularCircular
Display typeAMOLED (optional always-on mode)OLED/AMOLED
Released20252025

Every specification

384 specs
SpecGarmin Venu 4 45mmOppo Watch S
Overview
FamilyGarmin—
General
Weight38 g (56 g with included band)—
Battery lifeSmartwatch 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 typeLithium ion—
Display Size1.4" (35.3 mm) diameter—
Case materialstainless steel and fiber-reinforced polymer—
Color displayYes—
Lens materialCorning® Gorilla® Glass 3—
Physical size45 x 45 x 12.5 mm Fits wrists with a circumference of 135-200 mm—
Bezel materialstainless steel—
Memory/History8 GB—
Strap materialsilicone—
Charging methodGarmin proprietary plug charger—
Large font optionYes—
Display resolution454 x 454 pixels—
Quick Release bandsyes (22 mm, Industry standard)—
Built-in speaker/microphoneYes—
Sensors
StocksYes—
CalendarYes—
PasscodeYes—
CalculatorYes—
Color shiftYes—
ConnectivityBluetooth®, ANT+®, Wi-Fi®—
Garmin ShareYes—
Hourly alertYes—
Color filtersYes—
Find My PhoneYes—
Voice commandYes—
Evening reportYes—
Morning reportYes—
Red shift modeYes—
Spoken watch faceYes—
Weather forecastsYes—
Smart NotificationsYes—
Smart trainer controlYes—
Smartphone compatibilityiPhone®, Android™—
Controls smartphone musicYes—
On-device Connect IQ™ StoreYes—
Plays and controls watch musicYes—
Find My Phone during GPS activityYes—
Pairs with Garmin Connect™ MobileYes—
Compatible with Garmin Messenger appYes—
Find My Garmin (helps locate lost device)Yes—
Battery saver (customizable low power watch)Yes—
Bluetooth phone calling and voice assistant supportYes—
Realtime settings sync with Garmin Connect™ mobileYes—
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—
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
Variant
ColorSilver with Silver Gray Silicone Band—
Case Size45 mm—
Available ColorsSlate 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—
Clock Features
Sleepyes (advanced)—
Hydrationyes (in Garmin Connect™ and optional Connect IQ™ widget)—
BreathworkYes—
MeditationYes—
Fitness ageYes—
Sleep coachYes—
Health statusYes—
Nap detectionYes—
All-day stressYes—
Women's healthyes (in Garmin Connect™ and optional Connect IQ™ widget)—
Health snapshotYes—
Jet lag adviserYes—
Sleep alignmentYes—
Respiration rateYes—
Skin temperatureYes—
Lifestyle loggingYes—
Resting heart rateYes—
Breathing variationsYes—
Relaxation remindersYes—
Past ovulation estimatesYes—
Abnormal heart rate alertsyes (high and low)—
Relaxation breathing timerYes—
Body Battery™ energy monitorYes—
Heart rate (constant, every second)Yes—
Gaming Features
TrueUp™Yes—
Move IQ™Yes—
Step counterYes—
Floors climbedYes—
Calories burnedYes—
Distance traveledYes—
Intensity minutesYes—
Weight shift alertYes—
Automatic rep countingYes—
Wheelchair push trackerYes—
Move Alert movement optionsYes—
Garmin Connect™ Challenges appYes—
Move alerts (displays on device after a period of inactivity)Yes—
Auto goal (learns your activity level and assigns a daily step goal)Yes—
Cycling Features
Pool swim workoutsYes—
Time and distance alertsYes—
Auto rest (pool swim only)Yes—
Underwater wrist-based heart rateYes—
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
Auto restYes—
UltraTrac modeYes—
Vertical speedYes—
Elevation profileYes—
Total ascent/descentYes—
Future elevation plotYes—
Distance to destinationYes—
Sun and moon informationYes—
Barometric trend indicator with storm alertYes—
Running Features
PinPointerYes—
Tournament legalYes—
Digital scorecardYes—
Garmin AutoShot™Yes—
Round timer/odometerYes—
Yardage to layups/doglegsYes—
Hazards and course targetsYes—
Pairs with Garmin Golf appYes—
Green View with manual pin positionYes—
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
TimerYes—
StopwatchYes—
Time/dateYes—
Alarm clockYes—
TouchscreenYes—
Display typeAMOLED (optional always-on mode)—
Water ratingSwim, 5 ATM—
GPS Time SyncYes—
Garmin Pay™Yes—
Music storageYes—
Garmin ECG AppYes—
LED flashlightYes—
Multi-band GPSYes—
Training statusyes (improved)—
Wheelchair modeYes—
Smart wake alarmYes—
Training readinessYes—
Sunrise/sunset timesYes—
Pulse Ox blood oxygenyes (spot-check, and optional all-day acclimation and in sleep)—
Sleep score and insightsYes—
Automatic daylight saving timeYes—
Battery life (smartwatch mode)Up to 12 days—
Make calls and send texts via voiceyes (with paired compatible smartphone)—
Activity Profiles
AssistanceYes—
Live Event SharingYes—
Incident Detection during select activitiesYes—
Incident detection alert on phone for wearablesYes—
Outdoor Recreation
Up AheadYes—
TracBack®Yes—
Back to startYes—
Point-to-point navigationYes—
Bread crumb trail in real timeYes—
Daily Smart Features
HIIT workoutsYes—
Yoga workoutsYes—
Cardio workoutsYes—
Pilates workoutsYes—
Strength workoutsYes—
Multisport workoutsYes—
Garmin Cycling CoachYes—
Garmin Running CoachYes—
Garmin fitness coachYes—
Garmin Coach - StrengthYes—
Mixed session multisportYes—
Garmin Running Coach ExpertsYes—
On-screen workout animationsYes—
On-screen workout muscle mapsYes—
Workouts for wheelchair usersYes—
Garmin Coach - Prebuilt Cycling PlansYes—
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—
Mapping & Navigation
CoursesYes—
Race an activityYes—
Power meter compatibleYes—
Power curve and % FTP workoutsYes—
Compatible with Varia™ lightsYes—
Compatible with Varia headlight cameraYes—
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—
Activity Tracking Features
% HRRYes—
% HR maxYes—
HR zonesYes—
HR alertsYes—
ShortcutsYes—
HRV statusYes—
Load ratioYes—
Manual lapYes—
Rest timerYes—
Auto scrollYes—
Finish timeYes—
HR caloriesYes—
Voice alertsYes—
Custom alertsYes—
Physio TrueUpYes—
Recovery timeYes—
Training loadYes—
VO2 Max (Run)Yes—
Course guidanceYes—
Training effectYes—
Virtual PartnerYes—
Workout benefitYes—
Race an ActivityYes—
Advanced workoutsYes—
Interval trainingYes—
Race glance/widgetYes—
Training load focusYes—
VO2 Max (Trail Run)Yes—
GPS speed and distanceYes—
Configurable lap alertsYes—
Customizable data pagesYes—
Unified training statusYes—
Touch and/or button lockYes—
Activity history on watchYes—
Multisport auto transitionYes—
Downloadable training plansYes—
Training effect (anaerobic)Yes—
Manual multisport activitiesYes—
HRM running pace and distanceYes—
Heat and altitude acclimationYes—
Customizable activity profilesYes—
Auto Pause® automatic timer haltYes—
Respiration rate (during exercise)yes (with compatible accessory)—
Auto Lap® interval tracking featureYes—
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
GymStrength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing, Jump Roping—
SwimPool Swimming, Open Water Swimming—
CyclingBiking, Road Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX—
WellnessWalking, Pilates, Yoga , Indoor Walking, Mobility, Meditation, Breathwork—
MultisportTriathlon, Duathlon, Brick, Pool Triathlon, Swim/Run, Mixed Session—
In the ringBoxing, Mixed Martial Arts—
Team sportsBasketball, Volleyball, Field Hockey, Ice Hockey, Football/Soccer, American Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball—
Motor sportsMotorcycling, Overlanding, Motocrossing, ATVing, Snowmobiling—
On the waterStand Up Paddleboarding, Rowing, Kayaking, Fishing, Snorkeling—
Racket sportsTennis, Pickleball, Badminton, Squash, Table Tennis, Padel, Platform Tennis, Racquetball—
Indoor runningTreadmill Running, Indoor Track Running, Virtual Running—
Outdoor runningRunning, Outdoor Track Running, Trail Running, Ultra Running, Obstacle Racing, Adventure Racing—
Snow and winterSkiing, Snowboarding, XC Classic Skiing, XC Skate Skiing, Ice Skating, Snowshoeing—
Outdoor recreationHiking, Rucking, Mountaineering, Indoor Climbing, Bouldering, Horseback Riding, Golfing, Disc Golf, Archery—
Other activity profilesInline Skating, Gaming. Breathwork—
Health & Wellness Monitoring
GPSYes—
QZSSYes—
BeiDouYes—
CompassYes—
GLONASSYes—
GalileoYes—
GyroscopeYes—
ThermometerYes—
AccelerometerYes—
SatIQ™ TechnologyYes—
Ambient light sensorYes—
Barometric altimeterYes—
Pulse Ox Blood Oxygen Saturation MonitorYes—
Garmin Elevate™ wrist heart rate monitorYes—
Safety and Tracking Features
Gaming ActivityYes—
GameOn™ app compatibleYes—
Training, Planning and Analysis Features
Run workoutsYes—
Running powerYes—
Race predictorYes—
Foot pod capableYes—
Running dynamicsYes—
Lactate thresholdYes—
Grade-adjusted paceYes—
Trail run auto climbYes—
Performance conditionYes—
Run/Walk/Stand detectionYes—
Stride length (real time)Yes—
PacePro™ Pacing StrategiesYes—
Projected race time and paceYes—
Vertical oscillation and ratioYes—
Ground contact time and balanceyes (GCT balance with accessory)—
GPS-based distance, time and paceYes—
Course- and weather-specific race predictorYes—
Cadence (provides real-time number of steps per minute)Yes—
Design
width—45
height—45
volume—18.02 cm³
weight—35 g
thickness—8.9
ATM rating—5 ATM
resolution—464 x 464 px
screen size—1.46 inches
Display type—OLED/AMOLED
Has a display—Yes
pixel density—317 ppi
width of band—22 mm
water resistance—Waterproof
Always-On Display—No
has a touch screen—Yes
is designed for kids—No
waterproof depth rating—1.5 m
Watch band is replaceable—Yes
Has sapphire glass display—No
Ingress Protection (IP) rating—IP68
has branded damage-resistant glass—No
Battery
battery life—7 days
battery power—339 mAh
has wireless charging—No
has a removable battery—No
Has a solar power battery—No
has a rechargeable battery—Yes
Features
release date—2025-10-16
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—4GB
measures VO2 max—Yes
Has notifications—Yes
Has ECG technology—Yes
Locates your phone—No
has a front camera—No
has fall detection—No
has voice commands—Yes
Acquires GPS faster—Yes
Has vibrating alerts—Yes
number of microphones—0
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—Yes
Connectivity
has NFC—No
supports ANT+—No
supports Wi-Fi—No
supports Galileo—Yes
Bluetooth version—5.2
has a cellular module—No
Is compatible with iOS—Yes
Is compatible with Android—Yes
Miscellaneous
Has passcode—Yes
Is compatible with Windows—No
Is compatible with Mac OS X—No
has an external memory slot—No
has a battery level indicator—Yes
has a socket for a 3.5 mm audio jack—Yes
App & Software
Ad-free—Yes
Free app—Yes
Has coaching—No
Supports routes—No
Has achievements—Yes
Has goal setting—Yes
Has exercise diary—Yes
Can be personalised—Yes
Has weight tracking—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
Counts how many calories you've burned—Yes
Activity tracking
Measures pace—Yes
Tracks distance—Yes
Tracks elevation—Yes
Designed for golf—No
Tracks your sleep—Yes
Tracks steps taken—Yes
Designed for diving—No
Has a route tracker—Yes
Has exercise tagging—Yes
Tracks calorie intake—Yes
Provides sleep reports—Yes
Detects activities automatically—Yes
Has a stroke counter for swimming—Yes

Wrist Fit

Garmin Venu 4 45mm

Sits best on wrists ~47–64mm wide (≈ 12.6–17.1cm circumference).

Oppo Watch S

Sits best on wrists ~47–64mm wide (≈ 12.6–17.1cm circumference).

Frequently Asked Questions

Is the Garmin Venu 4 45mm bigger than the Oppo Watch S?

Both have a 45mm case. Compare their thickness and lug-to-lug above to judge wrist presence.

Which fits a smaller wrist better, the Garmin Venu 4 45mm or the Oppo Watch S?

The Garmin Venu 4 45mm suits wrists around 47–64mm wide, and the Oppo Watch S around 47–64mm. The one with the smaller lower bound is the safer pick for a small wrist.

Can I see the Garmin Venu 4 45mm and Oppo Watch S 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