Galaxy Watch4 40mm (Bluetooth)

Galaxy Watch4


Four Galaxy Watch4 devices are grouped together, with each watch prominently showing different watch face styles to tell the time. Each watch is in a different color, from black, pink gold, green, to silver.

The watch that knows you best

A green Galaxy Watch4 is displayed with a band that is spread wide. The watch face shows one of the designs that displays the time in a green color.

Most of us want to know more about ourselves, so we can be the best version of ourselves. That's why we engineered the all-new Galaxy Watch4 to be the companion to your journey towards a healthier you. 1

FITNESS

Fitness
within
arm's
reach

A woman is smiling and holding a frisbee while wearing a silver Galaxy Watch4 on her wrist.

BODY COMPOSITION

Don't just listen
to your body.
Know it

Track your fitness progress with our first smartwatch that conveniently measures body composition. Get to know your body fat percentage, skeletal muscle, body water and more to achieve your goals. The Samsung BioActive Sensor and our fastest chip brings the biggest innovation to Galaxy Watch yet. 2, 3, 4, 5, 6, 7, 8, 9, 10

A woman is looking at the mirror and flexing her muscles while wearing a Galaxy Watch4 device and holding a Galaxy Z Flip3 5G in her right hand.
The front of the Galaxy Watch4's watch face is shown with the Body Composition feature on, waiting to measure.

Get a BIA measurement using just two fingers in 15 seconds. Anytime, anywhere.

The underneath of a Galaxy Watch4 device is shown and the sensor is being highlighted.

The new Samsung BioActive Sensor captures your body composition in real time to inform you as you manage your health goals.

Measurement results of different metrics from weight, BMI, skeletal muscle, fat mass, body water, to BMR.

GROUP CHALLENGE

Your workout buddies have
your back

Following the text message, there are two emotes; a gush of wind and a set of eyes glancing left.

See you at the finish line, David!

12:45 PM

The front of a Galaxy Watch4 with a green band is shown, and its watch face displays "3rd place" in a walking Group Challenge with friends. Around the watch are diverse people cropped in a circle. There are text bubbles on the top left and bottom right, each pointing to its speaker.

Two exclamation point emotes are used before and after the words "Look out".

Look out Isabella is catching up...

12:46 PM

Enjoy every step you take with your friends and family with the Galaxy Watch4. Track your steps and compete with friends in a fun competition through a live message board. Challenges come with commemorative badges and a point system to make exercise fun, motivating and socially rewarding.

DAILY ACTIVITY & FITNESS TRACKING

Name a workout.
It can track it

Icons of different exercises can be seen and the swimming icon is highlighted. A woman is swimming in a swimming pool while wearing a Galaxy Watch4 device.
Two women and one man are riding bicycles together on a sunny day. They are similing and enjoying the ride while wearing Galaxy Watch 4 devices.
A man is stretching his left arm and is getting ready for a workout. He is wearing a black Galaxy Watch4 device on his right wrist.

Track your activities and fitness scores on your watch and phone. Count steps, check calories, and stay on the grid with GPS.
Galaxy Watch4 detects physical activity to track your routines and supports more than 90 exercises for a more accurate report of your workouts. 11

HEALTH

A watch that's watching out for you

A Galaxy Watch4 device in pink gold color attached with a pink band is shown. On the watch face, the menu for Blood Pressure and ECG measurement features are displayed.

BLOOD PRESSURE & ECG

All the data your heart desires

Meet the Samsung BioActive Sensor that measures ECG and blood pressure in real time. After initial calibration, the sensors quickly check your blood pressure. You can also check abnormal heart rate and rhythm through ECG and send data straight to your phone to be easily shared. 12, 13, 14, 15, 16, 17, 18

The underneath of the Galaxy Watch4 device's sensor that measures Blood Pressure is highlighted, followed by the sensor measuring ECG being highlighted.

Blood Pressure Measure Blood Pressure using an Optical Heart Rate Sensor known as the PPG Sensor.

ECG Measure ECG using an Electrical Heart Sensor.

The front watch face of the Galaxy Watch4 device is measuring blood pressure. Its display changes from the blood pressure measuring feature to the ECG measuring feature.

ADVANCED SLEEP

The most holistic sleep analysis on Galaxy watch

A silver Galaxy Watch4 device is shown with a silver band tied round and its watch face displaying the sleep tracking feature.

The sleep tracker detects and holistically analyzes your sleep stages while you rest. Improved measuring options let you check your blood oxygen levels and snoring patterns (not saying you do). Plus, get advanced insights from the National Sleep Foundation for better sleep quality and duration. 19, 20, 21, 22, 23, 24

DESIGN

Design comes full circle

Two Galaxy Watch4 devices are shown, a pink gold color on the left and a silver color on the lower right. Each has a watch face that is showing different colored designs to tell time.

DESIGN

Sleek, Seamless, Iconic

Galaxy Watch4 features a simple design with a streamlined Armor Aluminum metal frame. It offers high-end looks and functionality for your workouts and day-to-day tasks.

Choose from a selection of bands, including the Hybrid Leather Band and the Sport Band, to fashion your own band style. Treat your wrist with high-quality materials, comfort fit, and sweat-resistant surfaces. 25, 26, 27

There are three Galaxy Watch4 devices. The middle is in a green color and is showing its front watch face that has the number eight displayed. On th left is a silver Galaxy Watch4 showing the button side. On the right is a pink gold Galaxy Watch4 showing the opposite side.
A green Galaxy Watch4 device is showing the time on its watch face in a green and white outlined design along with a green running icon.
The sideways view of different Galaxy Watch4 devices are placed next to each other, forming a pattern. Various body and band colors are shown, from olive green, mustard, navy, pink, red and silver.
GO TO GALAXY WATCH4 CLASSIC

WATCH FACE

A new day.
A new watch face

A Galaxy Watch4 device and its various watch face styles can be seen.

Choose between analog or digital watch faces with a variety of backgrounds, fonts, and colors to match your tastes, the weather, or occasion. Spice up your character watch faces with AR Emojis to express your style, while animated graphics show what you're up to, like running or listening to music.

NEW OPERATING SYSTEM

It's a real
team player

The sideways view of a green Galaxy Watch4 device is displayed, and various app icons can be seen.

The first smartwatch with Wear OS Powered by Samsung, Galaxy Watch4 puts seamless access to your favorite apps on your wrist. You'll get a rich app selection from music streaming apps to anything in the massive library of health and fitness apps. 28, 29

COMPATIBILITY

Plays well with others

The Galaxy Watch4 comes with Wear OS Powered by Samsung, giving you seamless connection with Samsung Galaxy devices. Control ANC on Galaxy Buds2 or enable apps on your phone straight from your watch. Additional features like the compass makes the Galaxy Watch4 even more resourceful. 30

The Galaxy Watch4 Classic has a black color body and a black band.
Galaxy Watch4 Classic
The Galaxy Buds2 earbuds are shown in olive color.
Galaxy Buds2
The Galaxy Z Flip3 5G is shown half folded.
Galaxy Z Flip3 5G
The Galaxy Z Fold3 5G is also shown half folded.
Galaxy Z Fold3 5G

Life opens up
with Galaxy

EXPLORE MORE

Building a brighter future on the go

Supporting the Global Goals just got easier. Join the
movement to make the world a better place right from your
wrist on the Samsung Global Goals app for the Galaxy Watch.

Two Galaxy Watch4 devices are shown. One is a black Galaxy Watch4 displaying the time. The other is a green Galaxy Watch4 that is displaying the Global Goals list.
SAMSUNG GLOBAL GOALS
C C
  1. Availability of colors, sizes, models, and bands may vary by country or region.

    * UI subject to change.

    * Available features and apps may vary by region, connected device, OS, or carrier.

    * All images on this page are simulated for illustrative purposes.

  2. DO NOT measure your body composition if you have an implanted pacemaker or other implanted medical devices.
  3. DO NOT measure your body composition if you are pregnant.
  4. Measurement results may not be accurate if you are under 20 years old.
  5. Intended for general wellness and fitness purposes only. Not intended for use in detection, diagnosis, treatment of any medical condition or disease. The measurements are for your personal reference only. Please consult a medical professional for advice.
  6. Availability of BIA may vary by country or region.
  7. All features and UI are subject to change.
  8. Compatible with Android 6.0 or higher, RAM 1.5GB above.
  9. Device activation is only available after connecting to a smartphone that supports Google Mobile Services(GMS). Please refer to your device manufacturer to find out whether your smartphone supports Google Mobile Services(GMS).
  10. Compatible Smartphone Brand and available features may vary by region, carrier and device. Please refer to your device manufacturer to find out whether your smartphone is compatible to Galaxy Watch4 Series Smartwatch.
  11. Galaxy Watch4 has a water resistance rating of 50 meters under the ISO standard 22810:2010. It is not suitable for diving or high-pressure water activities. If the device or your hands are wet, they must be dried thoroughly prior to handling.
  12. ECG and BP feature only to be used by 22 years+. For accurate BP readings, a calibration is required every 4 weeks by BP monitor & arm cuff. Requires a Galaxy smartphone running Android 7.0 or above.
  13. Users should measure their blood pressure when at rest, as they would do with a traditional cuff, and refrain from measuring when they are working out, smoking, or drinking.
  14. Availability of feature and app may vary by region, connected device, SW version and carrier.
  15. Measured blood pressure history can be reviewed within the Samsung Health Monitor app on a paired smartphone.
  16. A Galaxy Watch and Samsung Galaxy smartphone are required to use Samsung Health Monitor app. Due to country restrictions in acquiring approval/registration as a medical device, Samsung Health Monitor app only works on watches and smartphones purchased in the countries where service is currently available.

    - Supported watches: Galaxy Watch4, Galaxy Watch3, Galaxy Watch Active2 and later released Galaxy Watch and Active models (excluding Galaxy Fit)

    - Supported smartphones: Samsung Galaxy smartphone with Android N OS version or higher

    - Samsung Health Monitor Blood Pressure app is available in 39 countries (Austria, Azerbaijan, Belgium, Brazil, Bulgaria, Chile, Croatia, Cyprus, Czech, Denmark, Estonia, Finland, France, Georgia, Germany, Greece, Hong Kong, Hungary, Iceland, Indonesia, Ireland, Italy, Korea, Latvia, Lithuania, Netherland, Norway, Poland, Portugal, Romania, Russia, Singapore, Slovakia, Slovenia, Spain, Sweden, Swiss, UK and UAE, as of Aug. 11, 2021).

  17. The Blood Pressure app is a 'medical device' in countries where registration/approval is required and obtained. Note that availability of Blood Pressure app may vary by country. Please use after reading 'Precautions before use' and 'How to use' steps 1~4.
  18. The Blood Pressure app is not intended for any diagnostic purposes regarding hypertension or other heart conditions or users under 22 years old. Users should not interpret or take clinical action based on the device output without consultation of a qualified healthcare professional. The Blood Pressure app is not intended to replace traditional methods of diagnosis or treatment.
  19. The Advanced Sleep feature is for fitness and wellness purposes only and not intended for use in detection, diagnosis, treatment of any medical condition or disease.
  20. The measurements are for your personal reference only. Please consult a medical professional for advice.

    - Availability may vary by country or region.

  21. The Galaxy Watch4 must be paired with a smartphone to use the sleep management function.
  22. For best results in detecting and recording snoring, place your smartphone on a stable surface near your head with the bottom of the smartphone pointed to your head.
  23. The default setting for snoring detection is off. Users can turn the setting on with their smartphone at anytime using the Samsung Health App 6.18 version or above.
  24. Advanced insights from the National Sleep Foundation is only available on a smartphone paired with the Galaxy Watch4.
  25. For optimal reading accuracy, your Galaxy Watch4 needs to be snugly fastened to your wrist. When you are not conducting readings, you may loosen the band to provide breathing room. On balance, your watch’s band should not be fastened too tight or loose: make sure that it feels comfortable around your wrist.
  26. If you experience redness, itchiness, or other irritation, remove your Galaxy Watch4 and consult a medical provider prior to continued use. Such reaction may result due to allergies, wearing for prolonged periods, usage habits such as wearing it too tight, or exposure to sweat or other irritants.
  27. Keep your Galaxy Watch4 and its band(s) clean by wiping them with a soft, dry cloth.
  28. Available apps may vary by country or region.
  29. Wear OS Powered by Samsung works with phones running the latest version of Android (excluding Go edition and phones without Google Play Store). Supported features may vary between platforms and countries with compatibility subject to change.
  30. Buds Controller is compatible with Galaxy Buds+, Galaxy Watch4, and their respective following models.

Specifications

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  • NFC NFC
  • Bluetooth Version Bluetooth v5.0
  • Size (Main Display) 1.2"
  • ROM Size (GB) 16
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