GARMIN Venu 4 Smart Watch - 45 mm

Published date: 20/Sept/2026

GARMIN Venu 4 Smart Watch - 45 mm

Colour

Currently unavailable

Key Features

Battery Life
Up to 12 days
Supported OS
iOS & Android
Display size
1.4"
AMOLED (optional always-on mode)
Payments & calls
Pay & calls
Resistance
5 ATM

What Customers Say

Reviewers were won over by the move to an all-metal case, which they felt finally makes the watch pass for an everyday timepiece rather than a piece of sports kit, and by the bright AMOLED screen that stayed readable in direct sunlight. Testers consistently reported eight to ten days between charges with the always-on display off and around four to five with it on, comfortably ahead of the mainstream smartwatch rivals they compared it with. The multi-band GPS locked on within seconds and held its track under tree cover, heart-rate readings were described as consistent during steady runs and gym sessions, and the new Health Status and Lifestyle Logging tools, the built-in torch and the reworked interface all drew praise. Reviews cover both sizes of the model; the 45 mm reviewed here shares everything but its case, screen and battery figures with the 41 mm.

The common complaints were the price rise over the previous generation and the drop to two buttons, which several testers found fiddly mid-workout, while the lack of LTE and a proper app store left it short of a phone-replacing smartwatch.

For buyers who want Garmin's fitness and health tracking in a watch that looks at home in the office, and who value a week-plus of battery over smartphone-style apps, reviewers rated it the most complete Venu yet.

Who Should Buy This

  • Runners and cyclists who want accurate multi-band GPS tracking,
  • Health-focused wearers who want sleep, ECG and readiness insights,
  • Long-battery seekers who want well over a week between charges,
  • Office-to-gym users who want a metal case that looks like a watch,
  • Swimmers who want a watch rated for pool and open-water sessions.

Who Should Skip It

  • Phone-free users who need calls and data over LTE from the wrist,
  • Those who want a full app store and deep phone integration,
  • Small-wrist buyers who would find the larger case bulky.

What Experts Says

Overall Assessment and Positioning

The Garmin Venu 4 in 45 mm sits at the top of Garmin's lifestyle range: a full stainless steel and polymer case, a 1.4-inch AMOLED touchscreen and the same training and health toolkit as the brand's running watches, aimed at buyers who want serious fitness tracking in a watch that does not look like sports equipment. It competes with the mainstream smartwatches from the big phone makers on looks and with Garmin's own sports watches on capability, and it answers both with a battery that is measured in days rather than hours.

Key Strengths and Standout Features

Battery life is the headline: Garmin quotes up to 12 days in smartwatch mode, 25 days in battery saver and 20 hours of GPS-only tracking, so a week of daily wear with several workouts is realistic without reaching for the charger. Positioning uses multi-band reception across GPS, GLONASS, Galileo, QZSS and BeiDou, which is designed to hold a route where single-band reception struggles. The health side is unusually complete for a lifestyle watch, with the Elevate heart-rate sensor, Pulse Ox, the Garmin ECG app, sleep scoring with a sleep coach, Body Battery and Training Readiness. A built-in speaker and microphone take calls from a paired phone, Garmin Pay handles payments, 8 GB of storage holds music and an LED torch sits in the case.

Value Proposition and Who It's Best Suited For

This is the Venu for someone who trains regularly but wears one watch all day: runners and cyclists who want accurate tracking, anyone who wants Garmin's sleep and recovery metrics, and buyers tired of nightly charging. The compromise is on the smart side, since it pairs with iPhones and Android phones over Bluetooth but has no cellular option and no third-party app store, so anyone who wants to leave the phone at home or lean on apps is better served elsewhere. For everyone else it is a well-rounded, long-lasting fitness watch in a case that looks the part.

Similar Reviews

Video Reviews

ChoiceWise Scores: 90 Out Of 100

Display
92
Battery
85
Fitness & Health
95
Durability
85
Smart Ecosystem
96
Connectivity & GPS
95
Comfort Build
84

The ChoiceWise Score is calculated using a defined methodology based on the features and factors that matter most in this category. Read our full scoring methodology: choicewise.app/methodology#score

CategorySmartwatch
Strap materialSilicone
ClosureBuckle
Supported OSiOS & Android
Operating systemGarmin
ConnectivityBluetooth ANT+ WiFi
GPSBuilt-in GPS
GPS systemsGPS GLONASS Galileo QZSS BeiDou Multi-band
Battery typeLithium ion
Charging methodGarmin proprietary plug charger
Charge time2 hours
Battery lifeUp to 12 days 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
Size1.4"
Resolution454 x 454 pixels
TypeAMOLED (optional always-on mode)
TouchscreenYes
ShapeCircle
Resistance5 ATM
Voice assistantBluetooth phone calling and voice assistant support Voice command
Health & fitness trackingSleep Score and Insights Pulse Ox Blood Oxygen Saturation (spot-check, and optional all-day acclimation and in sleep) Garmin ECG App Training Readiness Training Status: Improved Heart Rate Resting heart rate Abnormal Heart Rate Alerts (high and low) Respiration Rate Fitness Age Body Battery Energy Monitor All-day Stress Relaxation reminders Relaxation Breathing Timer Meditation Breathwork Sleep (advanced) Sleep coach Sleep Alignment Breathing variations Nap detection Hydration (in Garmin Connect and optional Connect IQ widget) Women's Health (in Garmin Connect and optional Connect IQ widget) Past ovulation estimates Health Snapshot Skin temperature Jet lag adviser Lifestyle Logging Health Status Step counter Wheelchair push tracker Move alerts Move alert movement options Weight shift alert Auto goal Calories Burned Floors climbed Distance travelled Intensity minutes TrueUp Move IQ Garmin Connect Challenges app Automatic rep counting
Smart functionsGarmin Pay Make calls and send texts via voice (with paired compatible smartphone) Find my phone Find My Garmin Find My Phone during GPS activity Connect IQ On-device Connect IQ Store Smart Notifications Text response/reject phone call with text View images from notifications on watch Morning report Evening report Calendar Weather forecasts Realtime settings sync with Garmin Connect mobile Battery Saver - customisable low power watch Controls smartphone music Plays and controls watch music Compatible with Garmin Messenger app Smart trainer control Compatible with Garmin Connect Mobile Stocks Colour Shift Red shift mode Garmin Share Passcode Calculator Colour Filters Spoken Watch Face Hourly Alert Incident detection during select activities Incident detection alert on phone for wearables Assistance Live event sharing
Other featuresPay & calls 8 GB memory Lens: Corning Gorilla Glass 3 Bezel: Stainless steel Quick release bands (22 mm, Industry standard) Built-in speaker and microphone LED flashlight Music storage Wheelchair mode SatIQ technology Security updates until at least 2027-09-29
SensorsGarmin Elevate wrist heart rate monitor Pulse Ox blood oxygen saturation monitor Barometric altimeter Compass Gyroscope Accelerometer Thermometer Ambient light sensor
Dimensions45 x 45 x 12 mm (H x W x D)
Case size45 mm
Case materialStainless steel and fiber-reinforced polymer
ColourSlate & Black Silver & Citron Silver & Silver Grey
Weight38 g
Box contentsVenu 4 - 45 mm Charging/data cable Documentation

Frequently Asked Questions

Garmin quotes up to 12 days in smartwatch mode, or four days with the display always on, up to 25 days in battery saver mode and up to 20 hours in GPS-only mode.

Yes, it carries a 5 ATM water rating, which covers swimming, showering and rain.

Yes, it pairs with both iOS and Android phones over Bluetooth through the Garmin Connect app.

No, there is no LTE option. It can make and take calls through its built-in speaker and microphone when paired to a compatible smartphone.

It supports GPS, GLONASS, Galileo, QZSS and BeiDou with multi-band reception, plus SatIQ technology.

Yes, it supports Garmin Pay for contactless payments.

Yes, it has 8 GB of memory for music storage and can play and control music from the watch.

It uses industry-standard 22 mm quick-release bands, so third-party straps fit.

ChoiceWise does not perform hands-on product testing for this page. The expert opinion and recommendations are based on third-party reviews and sources, which we analyze and summarize using our editorial process.