Samsung Electronics Galaxy Watch 4 40mm Smartwatch

5.00 out of 5 based on 10 customer ratings
(10 customer reviews)


Get ready to crush your wellness goals with body readings right on your wrist.

Better Sleep Starts Here: Wake up feeling refreshed and recharged with advanced sleep tracking; When you go to bed, your Galaxy Watch4 sleep tracker starts monitoring your sleep and SpO2 levels continuously.

Be Smart About Your Heart: Take care of your heart with accurate ECG monitoring and keep an eye on possible atrial fibrillation, a common form of irregular heart rhythm; Share personalized readings with your doctor using the Samsung Health Monitor app on your compatible Galaxy phone.

Make Every Workout Count: Get the most out of every exercise session with advanced workout tracking that recognizes 6 popular activities, from running to rowing to swimming, automatically in just 3 minutes; Stay motivated by connecting to live coaching sessions via your smartphone or to dynamic Group Challenges with your friends.

Go the Extra Mile: Improve your runs with advanced running coaching technology; VO2 Max readings assess your oxygen levels to manage and track your heart and lung endurance.

Do More Right From Your Wrist: Galaxy Watch4 works as an extension of your phone so you can talk, stream, and text from your wrist on the go.

Google on Your Wrist: Tap into the power and convenience of select Google services and apps; Pay for coffee, get directions to the park, use Google Assistant or Bixby, and stream from YouTube Music.

Timeless Design, Elevated Style: Show of your style with a luxurious and timeless watch design that’s great for any occasion; Personalize your look even more with a range of stylish watch faces and bands.

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10 reviews for Samsung Electronics Galaxy Watch 4 40mm Smartwatch

  1. GS_Jennsen

    Thank goodness Google and Samsung both came to their senses and merged with wear OSes. Samsung has always made higher quality watches, but their little walled garden OS simply wasn’t practical. But now I have my Android apps on my Samsung watch, and it’s all good.The watch is very lightweight and sleek; the band is maybe a little on the thick sign, costing it a few fashion points. The battery life is much improved over previous smartwatches (caveat: except, multiple timers run back to back will drain the battery in a hurry).I suppose the best thing I can say about it is, I forget it’s there. It’s quiet, comfortable and unobtrusive, until it needs to tell me something.

  2. JayyVee

    I’ve been through numerous digital watches over the past few years with the entire ‘vital signs’ and yada yada digital tricks they all offer. This Samsung watch with use of the Facer App – is exactly what I wanted. A clean, fast, crisp, modern looking digital watch that I have endless faces and control over. Great apps, the sleep functions and snore detection are incredible (unless of course you snore, and are suddenly faced with the raw data and snoring to listen to yourself!) :)Only gripe – perhaps battery life. However honestly, from what I gather with the recent updates the watch is much better than upon release. (With full monitoring going, and my watch beeping at me from all the notifications and emails I get – i wasn’t sure it would make a 24 hour cycle). It does every day – 24 hours easily, with an hour or so on the charger while I have some downtime and coffee in the morning.

  3. J. Love

    The only smartwatch I’ve ever had was a fitbit charge 2 so I don’t really have anything to compare it to, so keep that in mind.I’m a pretty sedentary and anxious human being so I got this to keep myself accountable for going on walks, meditating, and generally getting my act together. So far it’s doing what I want it to.I’m going to say the SpO2 sensor is super janky, and can’t decide whether I’m perfectly healthy or on the verge of brain damage from hypoxia half the time. I have no symptoms, and my readings on a regular pulse oximeter and at the doctor are consistently normal so I’m not concerned about this.I love that it auto detects my walks after a while because I always seem to forget to tell it I’m going. It tells me how long it took me to go a mile and how many steps I took and the breakdown after the walk is over is nice.The ECG feature is reassuring as well, as I can share that information with my doctor easily with the interface given. I don’t understand the body composition feature so I’ll maybe update this review when I talk to my doctor about it in a couple months. I wouldn’t use it if you have body dysmorphia though. You can take that tab off both the phone and the watch in the settings so you don’t have to think about it if you’re concerned.You will need a samsung device to use ECG , SpO2, and a couple other things I can’t recall at the moment, so that’s a bit frustrating for those who don’t have samsung everything.Every feature is very enjoyable, snappy, and pretty much everything I wanted in a smartwatch. I’m pleased with it, am moving more, and when used in conjunction with my other stress control and fitness apps I’m starting to be able to see quantifiable results from all the effort I’ve been putting in. I can control my music with it, send texts, make calls. My life is easier, my exercise is more fun, and I’m getting to be a lot happier with its help.The battery life sucks, but it’s probably good to take it off for an hour or so a day anyway as the band is comfortable but can start to rub wrong.All in all, I’m very satisfied with it. It suits my needs better than I expected. It no longer feels like a frivolous purchase. I didn’t absolutely need it, but I’m very glad to have it.

  4. Jack

    I ordered the Galaxy Watch 4 directly from Samsung. I took advantage of the trade-in program on my Active 2.The Watch 4 is sleeker and more premium than the Active 2. The limited number of current watch faces being it’s only drawback.The main reason for my review is to counter the review stating the touch bezel isn’t touch sensitive. Nonsense! In fact, it is more touch sensitive and smoother operating than my Active 2.

  5. R Silvert

    I got this as a replacement for my Fossil Sport which was becoming non-responsive. I primarily use it as a step/activity tracker, so at first I was a little miffed that I had to use Samsung health instead of Google Fit, but once I got used to it, I found that the Samsung app has a lot of great features and is very easy to use. I love being able to track my sleep phases, and measure body composition. The battery life is at least 50% longer. The screen is faster to wake, and can do so by looking at your wrist, no need to tap. The controls are very intuitive and the buttons and haptic effects are well designed. The band it came with was surprisingly comfortable, I usually dislike silicone bands, but I still prefer a softer, fabric band.Okay, I just figured out that I can use Google Fit and adjusted my rating accordingly. Boy, do I feel dumb. Got my ❤️ points back again

  6. C

    Galaxy Watch 4 -New for 2021, Samsung has released two versions of the Galaxy Watch: Galaxy Watch 4 and Galaxy Watch 4 Classic. This Galaxy Watch 4 has a physical design similar to the Galaxy Watch Active 2, with the digital touch ring around the edge, and sizes of 40mm and 44mm. Meanwhile, the Watch 4 “Classic” has a physical design more like the Watch 3, with a physical rotating steel bezel and sizes of 42mm and 46mm. Both versions come in Bluetooth or LTE models. Both versions now use Google’s WearOS operating system, instead of Samsung’s TizenOS, which all previous Samsung watches used. This means a wider selection of apps to choose from for your watch, including all of the Google apps.So to reiterate:Watch4 = Watch Active2 design + Google WearOSWatch4 Classic = Watch3 design + Google WearOSBoth versions now have a faster processor than the Watch3, as well as more RAM (1.5GB upgraded from 1GB) and more storage (16GB upgraded from 8GB). There are also some extra sensors including a geomagnetic sensor, and body composition analysis, although some functionality may depend on your country.Here are some of my other thoughts after using these watches so far:-WearOS: This is the biggest difference to me so far. There are many more apps available now that Samsung is using WearOS, including things like Google Maps. I have really enjoyed the wider variety of apps to choose from. Of course, if you had previously been using a custom watch face on a Galaxy Watch 3 from the Galaxy Store, you might miss that old face, but there are plenty of others to choose from.-Speed: The Watch 4 is noticeably faster. Scrolling through apps and launching applications just seems to be more smooth, and a tiny bit faster to do everything.-BodyComp: This seemed to be pretty inaccurate for me, but it is nice to have this data for a baseline to try to improve.-Battery: The battery life seems to be a bit better with this Watch4 than it was with the Watch3. I will test this more over the next few weeks.Overall, I like the changes with this new version of the Galaxy Watch. There are reportedly more software updates in the works too, like using Google Assistant instead of Bixby. Coming from the Galaxy Watch 3, I prefer the Watch 4 “Classic” model because of the rotating bezel, but if you are upgrading from the Active2 and don’t care about the bezel, then you might prefer the regular Watch 4. (Note – I personally have not tried to use these with an iPhone, but several sources seem to indicate that there are some difficulties when trying to do so, so do some research first if you are using an iPhone)

  7. Damien

    Ive had many smartwatches. Moto 360, the bulky LG Sport, Fossil Gen 4 and Fossil Gen 5 (that I lost). I loved the Fossil watches because they are high quality watches using WearOS. Never liked Samsung because of Tizen. So when I lost my Fossil Gen 5, I naturally was going to upgrade to the Fossil Gen 6. I did do some other research too and the more I researched, the more I started to like the Samsung Galaxy Watch 4. I don’t like bulky watches and the Watch 4 was more slender than the Classic. Reading these Amazon reviews, I was almost scared away. Anything from Google Pay not supported to the touch bezel doesn’t work at all.Let me just say, not sure if these reviews were early updates or what but Google Pay works just fine and the touch bezel works just fine (although I scroll with my finger anyways). The touch bezel is good for turning volumes up and down and it works perfectly whenever I use it.Another contributing factor to choosing Galaxy Watch 4 over Fossil Gen 6 is the Fossil wasn’t releasing with WearOS 3.0. I believe at the time of me typing this review, the Galaxy Watch 4 is the only released device with WearOS 3.0 and it is a major improvement on previous WearOS versions.I’m not a health nut but the integration with Samsung Health is amazing. I do like to track my steps and sleep and this watch is awesome for that. For sleep, all I do is turn bedtime mode on and go to sleep. The watch does the rest. Monitors blood oxygen and how well you slept. Not sure how accurate it truly is but I do like knowing about how long I’ve slept.As far as battery life, it lasts at least all day long. Usually longer. I use it moderately at work checking notifications, replying to messages and controlling my music and when I get home from working a 8-10 hour day, my watch is around 40%-30% typically. I put it on the charger before bed, put it on at 100% at bedtime and wake up to about 85% battery for the day.DO NOT LET OTHER REVIEWS DISCOURAGE YOU! I challenge you to do your own research. Watch YouTube videos or even go to a local phone store and look/feel the watch. It’s definitely the best watch I’ve owned to date.If I had to give downsides, it would have to do with Samsungs integration into WearOS 3.0. The Bixby button is NOT reprogrammable to Google Assistant but can be disabled (not remapped). However, from videos I’ve watched, the Bixby assistant is useful on the watch as it can turn on and off settings by asking it. The other complaint is not being able to reprogram the Samsung Pay button. If you press and hold the bottom button, it opens Samsung Pay by default. Which is annoying if you want to use Google Pay. However, once you properly install and set up Google Pay (and make it default payment method), you don’t need to open Google Pay to pay anywhere. Just tap your watch. But if you want to use a different card, you’d have to go into your apps and open Google Pay or assign it to open with a double tap of the top button (that action can be programmed to anything.).With the Galaxy Watch 4 still fairly new, I’m hoping Samsung continues to provide updates from community feedback.And by this time, I’ve hope you read my entire review and are placing your order now. Stop second guessing yourself, this watch in my opinion is the best out there right now.

  8. 80’s Rocker

    I originally brought the Galaxy Fit II, but then saw the Galaxy Watch 4 was available for pre-order and that the Tizen OS was no longer going to be used for the watches. So it was a no-brainer to return the Active II for the Galaxy Watch 4 (Especially since it was only $50 more and came with a nice wireless charger for both phone and watch.So far I like the watch and have not had any issues with it. The changes made to the UI are nice and having it with the WearOS instead of TizenOS should mean more apps are available for it. Will be interesting to see where this partnership between Google and Samsung go and what effect is has on the non-Apple watch market. I am thinking it will be a good thing for both Smart Watch makers and User.The watch seems to be accurate in all the biometrics it takes and the mapping of walks/runs are accurate. The auto-workout feature works pretty good and it does not take to long for it to register that you are walking/running. But if it does track automatically, it does not map your walk. You only get the mapping it you manually start the walk/run. Wish you could have it map no matter how the workout is started.The hourly chime does not seem to work if you have your system sound set to vibrate. When set to vibrate the hour chime should vibrate or still make a small sound every hour. They could make this customizable. None of the watch faces I had on the Galaxy Active II came over to the Galaxy Watch 4, which is understandable with the new WearOS, but you still lose any investment you made with paid watch faces.I like the electronic bezel over the physical one. It just give the watch a more polished look. I also has a Samsung Gear S with the bezel and over time it got all clogged and got harder to turn over time (and very hard to clean out). You do not have that problem with the Electronic Bezel.Overall, this is a very good smart watch with a user nice interface. I would recommend this to anyone who is looking at a smart watch to integrate with an Android phone, especially Samsung. I have heard the integration is not as nice on non-Samsung phones, but I suspect that will get better over time and Google and Samsung continue to work together on the WearOS and the Samsung UI. For the price you cannot go wrong with buying this watch. If you buy through Amazon I would recommend also getting the extended warranty, that way if any accidents happen the watch is covered. I always but the extended warranty for electronics that are worn or carried around a lot.

  9. Ricardo

    One of the the best watches on the market without a doubt.

  10. Tyler

    So, to be honest I read every single review about this smart watch. The biggest con that I was hung up on was the battery life. Instead of listening to everyone else I decided to take the plunge. I am glad I did! Listen, every day was charge our phones so what’s the big deal that the watch only lasts a day as well? Unless you got a dud then that’s an issue. I recommend this watch 100%. It does everything I want and more.

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