WatchFitTool

Fitbit Ace LTE vs Garmin Venu 4 41mm

Size, specs & wrist fit compared

Fitbit Ace LTE
Fitbit Ace LTE
41.04mm × 44.89mmCheck offerView specs
Garmin Venu 4 41mm010-03013-03
Garmin Venu 4 41mm

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Which one fits you

On wrists narrower than about 47mm, the Garmin Venu 4 41mm is the safer pick — it stays proportionate down to roughly 43mm, where the Fitbit Ace LTE starts to hang over the edge. Above 47mm both sit cleanly, and the Fitbit Ace LTE gives you more presence.

The Fitbit Ace LTE and Garmin Venu 4 41mm share a near-identical 41.04mm case, so wrist presence comes down to thickness, lug-to-lug and weight.

The Garmin Venu 4 41mm is the slimmer of the two (12mm vs 13.35mm), so it slides under a cuff more easily.

On the wrist the Fitbit Ace LTE feels lighter (28.03g vs 33g, case only).

Both are middle-of-the-pack for thickness among the 41mm watches in the database.

The Fitbit Ace LTE is 3.9mm longer, 1.3mm thicker and 5g lighter than the Garmin Venu 4 41mm. Both are circular.

Fitbit

Ace LTE

Garmin

Venu 4 41mm

Case width
41mm
41mmsame
Lug-to-lug
44.9mm
41mm−3.9mm
Thickness
13.3mm
12mm−1.3mm
Weight
28g
33g+5g

Switch or add watches

Fitbit Ace LTE

Fitbit

Ace LTE

Garmin Venu 4 41mm

Garmin

Venu 4 41mm

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

Fitbit Ace LTE

Case 41.0mm · Lug-to-lug 44.9mm · Thickness 13.3mm · 28g

Balanced Fit

44.9mm on a 55mm wrist

10:09TUE 12lug to lug 44.9mmyour 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 44.9mm, 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 wrist5.1mm spare each side

    Comfortable, with visible skin either side.

  • Off the wrist13.3mm off the skin

    Normal sports-watch height for a wrist this size. (13.3mm case, back against the skin)

  • How it seats~3.7mm under the rim

    Seats well, with the case back following most of the wrist.

  • Weight on the wrist28g

    Light enough to forget you have it on. (0.5g per mm of wrist)

Garmin Venu 4 41mm

Case 41.0mm · Lug-to-lug 41.0mm · Thickness 12.0mm · 33g

Balanced Fit

41mm on a 55mm wrist

10:09TUE 12lug to lug 41.0mmyour 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 41mm, 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 wrist7.0mm spare each side

    Comfortable, with visible skin either side.

  • Off the wrist12.0mm off the skin

    Normal sports-watch height for a wrist this size. (12.0mm case, back against the skin)

  • How it seats~3.7mm under the rim

    Seats well, with the case back following most of the wrist.

  • Weight on the wrist33g

    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
  • Fitbit Ace LTE41mm × 44.9mm · 13.3mm thick
  • Garmin Venu 4 41mm41mm · 12mm thick

3D preview

Fitbit Ace LTE vs Garmin Venu 4 41mm 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 Fitbit Ace LTE lasts 1.6× as long as the Garmin Venu 4 41mm (16 days against 10 days).

Fitbit Ace LTEGarmin Venu 4 41mm

  • Smartwatch

    16 days
    10 days

Specifications

The short version

7 key specs
SpecFitbitAce LTEGarminVenu 4 41mm
Case Width41.04mm41mm
Lug-to-Lug44.89mm41mm
Thickness13.35mm12mm
Weight28.03g33g
ShapeCircularCircular
Display typeOLED/AMOLEDAMOLED (optional always-on mode)
Released20242025

Every specification

385 specs
SpecFitbit Ace LTEGarmin Venu 4 41mm
Design
width41.04—
height44.89—
volume24.59 cm³—
weight28.03 g—
thickness13.35—
ATM rating5 ATM—
screen size1.61 inches—
Display typeOLED/AMOLED—
Has a displayYes—
pixel density333 ppi—
water resistanceWater resistant—
Always-On DisplayYes—
has a touch screenYes—
is designed for kidsYes—
Gorilla Glass versionGorilla Glass 3—
Watch band is replaceableYes—
Has sapphire glass displayNo—
has branded damage-resistant glassYes—
Battery
charge time1.16 hours—
battery life16 days—
battery power328 mAh—
has wireless chargingNo—
has a removable batteryNo—
Has a solar power batteryNo—
has a rechargeable batteryYes—
Sensors
has GPSYes—
has a compassYes—
Has a barometerNo—
has a gyroscopeYes—
Has a cadence sensorNo—
has an accelerometerYes—
Monitors perspirationNo—
Has a heart rate monitorYes—
Has a temperature sensorNo—
Monitors blood oxygenation levelsYes—
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
Features
RAM2GB—
release date2024-05-29—
Has a stopwatchYes—
Has smart alarmNo—
warranty period1 years—
Has call controlYes—
Has silent alarmYes—
has HRV trackingNo—
internal storage32GB—
measures VO2 maxNo—
Has notificationsYes—
Has ECG technologyNo—
has a front cameraNo—
has fall detectionNo—
has voice commandsNo—
Has vibrating alertsYes—
number of microphones1—
shows readiness levelNo—
Can be used to answer callsYes—
measures resting heart rateYes—
has irregular heart rate warningsNo—
has fast/slow heart rate notificationsYes—
Connectivity
has NFCYes—
SIM cards1 eSIM—
Wi-Fi versionWi-Fi 4 (802.11n)—
supports ANT+No—
supports Wi-FiYes—
supports GalileoYes—
Bluetooth version5—
has a cellular moduleYes—
Is compatible with iOSYes—
Is compatible with AndroidYes—
Miscellaneous
Has passcodeYes—
Has auto pauseYes—
Is compatible with WindowsNo—
Is compatible with Mac OS XNo—
has an external memory slotNo—
Compatible with smart scalesYes—
has a battery level indicatorYes—
has a socket for a 3.5 mm audio jackNo—
Compatible with external heart rate monitorsYes—
App & Software
Ad-freeYes—
Free appYes—
Has achievementsYes—
Has goal settingYes—
Has exercise diaryYes—
Predicts ovulationYes—
Can be personalisedYes—
Has weight trackingYes—
Predicts start dateYes—
Tracks water intakeYes—
Has inactivity alertsYes—
Has period notificationsYes—
Has temperature trackingNo—
Provides activity reportsYes—
Counts how many calories you've burnedYes—
Activity tracking
Measures paceYes—
Tracks distanceYes—
Tracks elevationYes—
Designed for golfNo—
Tracks your sleepYes—
Tracks steps takenYes—
Designed for divingNo—
Has a route trackerYes—
Has exercise taggingYes—
Has multi-sport modeNo—
Tracks calorie intakeYes—
Provides sleep reportsYes—
Detects activities automaticallyYes—
Has a stroke counter for swimmingNo—
Overview
Family—Garmin
General
Weight—33 g (46 g with included band)
Battery life—Smartwatch mode: Up to 10 days (3 days display always-on) Battery Saver Smartwatch mode: Up to 18 days GPS-Only GNSS mode: Up to 15 hours All-Systems GNSS mode: Up to 13 hours All-Systems GNSS mode with music: Up to 6 hours All-Systems GNSS mode + Multi-band: Up to 12 hours All-Systems GNSS mode + Multi-band with music: Up to 6 hours See Details
Battery type—Lithium ion
Display Size—1.2" (30.4 mm) diameter
Case material—stainless steel and fiber-reinforced polymer
Color display—Yes
Lens material—Corning® Gorilla® Glass 3
Physical size—41 x 41 x 12 mm Fits wrists with a circumference of 110-175 mm
Bezel material—stainless steel
Memory/History—8 GB
Strap material—silicone
Charging method—Garmin proprietary plug charger
Large font option—Yes
Display resolution—390 x 390 pixels
Quick Release bands—yes (18 mm, Industry standard)
Built-in speaker/microphone—Yes
Variant
Color—Lunar Gold with Bone Silicone Band and Light Sand Leather Band
Case Size—41 mm
Available Colors—Lunar Gold with Bone Silicone Band and Light Sand Leather Band; Slate with Black Silicone Band; Silver with Periwinkle Silicone Band; Lunar Gold with Bone Silicone Band
Clock Features
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
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
Cycling Features
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
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
Running Features
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
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 10 days
Make calls and send texts via voice—yes (with paired compatible smartphone)
Activity Profiles
Assistance—Yes
Live Event Sharing—Yes
Incident Detection during select activities—Yes
Incident detection alert on phone for wearables—Yes
Outdoor Recreation
Up Ahead—Yes
TracBack®—Yes
Back to start—Yes
Point-to-point navigation—Yes
Bread crumb trail in real time—Yes
Daily Smart Features
HIIT workouts—Yes
Yoga workouts—Yes
Cardio workouts—Yes
Pilates workouts—Yes
Strength workouts—Yes
Multisport workouts—Yes
Garmin Cycling Coach—Yes
Garmin Running Coach—Yes
Garmin fitness 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
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
Activity Tracking Features
% HRR—Yes
% HR max—Yes
HR zones—Yes
HR alerts—Yes
Shortcuts—Yes
HRV status—Yes
Load ratio—Yes
Manual lap—Yes
Rest timer—Yes
Auto 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
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
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
Gaming Activity—Yes
GameOn™ app compatible—Yes
Training, Planning and Analysis Features
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

Wrist Fit

Fitbit Ace LTE

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

Garmin Venu 4 41mm

Sits best on wrists ~43–59mm wide (≈ 11.5–15.8cm circumference).

Frequently Asked Questions

Is the Fitbit Ace LTE bigger than the Garmin Venu 4 41mm?

The Fitbit Ace LTE is bigger — 41.04mm vs 41mm case width.

Which fits a smaller wrist better, the Fitbit Ace LTE or the Garmin Venu 4 41mm?

The Fitbit Ace LTE suits wrists around 47–64mm wide, and the Garmin Venu 4 41mm around 43–59mm. The one with the smaller lower bound is the safer pick for a small wrist.

Can I see the Fitbit Ace LTE and Garmin Venu 4 41mm 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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