Just got it this week and starting to use it.
First it was reconditioned and not sure of what it would look like but was nicely surpraised for the condition. My wife thought I had purchased it new.
Second, I have a samsung phone and it connected easily to the phone with a little of tech, needed.
Still getting use to using the apps but so far so good.

I've only had this watch for about a day now. In some cases it meets my expectations and in others it succeeds. There are other things about it that I have mixed feelings about, but I'm sure that as I continue to use it and figure it out those areas of concern will iron themselves out.
I've owned several smartwatches in the past including a Ticwatch 2 and a Samsung Fit2. Both I liked well enough, but I found they lacked many health features. I have a Samsung phone and since my Fit2 worked more seamlessly with it than my Ticwatch 2, I decided to keep with the Samsung brand.
I'd recently updated my phone from a S8+ to an Ultra S22 Plus. While my Fit2 still worked very well with the new phone, I still had to manually enter sleep and there was no way to measure my blood oxygen. During Amazon's Prime Day, they had a great deal on the Galaxy Watch 4, so I decided to take the plunge.
I'll get the issues I have mixed feelings about out of the way first. When I got the watch yesterday, I got it fully charged and paired it with my phone easily enough. Later on while I was playing around with selecting watch faces and figuring out the AR emoji watch face, the watch somehow disconnected from my phone. I was able to get it to reconnect by turning the Bluetooth off and on through the watch. It did the same thing later on in the day while I was just sitting and watching TV and not even touching the watch. Both times the issue occurred, my phone was less than a couple of feet away from me. So I know it wasn't because my phone was too far away. Hopefully this won't be a reoccurring problem. Another issue I seem to be having is notifications that I want to show up on the watch aren't showing up. I've already gone through the notifications settings on both my phone and the watch and set things up the way I want them, but the notifications are still not showing up on the watch. I'll have to play around with it some more.
Now, on to the good stuff! It seems to do a great job of reading heart rate, sleep, steps, basic stuff for a smartwatch. I really didn't know what the body composition or the ECG was all about when I ordered it, but I thought, "Hey! This could be cool. Why not?" And it is interesting and gives some valuable insight. However, in order for it to take many measurements accurately I have to move the watch about a finger width above my wrist bone on my arm. I'm fine with that. A lot of other smartwatches that take the same kind of readings work the same way. It would be nice if the smartwatch industry could find a way to take those measurements without the wearer having to move the watch around, but until then those who want to keep a close eye on their health will have to choose watch bands for their smartwatches that can be easily adjusted.
Another thing that I didn't really know anything about was the stress measurement feature. I have absolutely no idea if it measures stress accurately, and, frankly, I really don't care. However, I do like that after it takes the reading it offers a built in breathing exercise. I may not know anything at all about how the watch measures stress, but I do know that breathing exercises have been known to help relieve stress and anxiety. They also help people focus and even get to sleep faster. So, having something like that built into the watch is pretty cool!
Another thing that I found really cool are all the different music features. Not only can you control music apps on your phone through the watch, but it has a built in mic and a small speaker. So, if you're away from your phone or don't want to take it out and wanted to have a voice recorder handy to make notes or something later, you have access to one right on your wrist. You can also directly download music from your phone to the Galaxy Watch 4 and can listen to music through either Bluetooth connected earbuds or directly through the little built in speaker.
As with all new gadgets, it takes some time to get used to them and figure out which apps you really need and which ones you don't, and exactly how you're going to use it. I imagine, over time, the watch and I will get used to each other.

I purchased the smart watchto find out I need to have my phone with me anyway. I did not understand that the watch was just a Bluetooth to the phone. I just don't see the need for having my phone and the watch.

I do like this watch very much. I gave 4 stars and would give 5 if I didn't have to charge it twice a day. I hope soon an update fixes the problem. I will sure change. I am dealing with it but sure wish the battery lasted longer. It does so much more tracking and more accurate than my versa 3. Maybe that is why the battery depletes so fast. I charge in the afternoon when it's 68 percent, if I don't it won't last the night. When I get up in the morning it is at 30 percent. again I charge or it won't last the day. I love the sleep tracker and even does snoring recap. So charging over night isn't for me, plus I set morning alarm. If anyone has a suggestion other than take apps off I don't use. I have done that. Set up was super easy. I replaced the silicone band because I despise those. The watch face is very clear. If the battery lasted 2 days like fitbit versa 3 I'd be over the moon with this watch. I will not part with it. Maybe I. A year or so I can upgrade to a more recent galaxy watch but at this time it's all I could afford and with prime day it gave me 50.00 off. I hope my review doesn't prevent anyone from buying. I did read about battery issue but believe an update may help.

The Samsung Galaxy Watch 4 has truly been a game-changer for my wonderful mother-in-law. From the moment she started using it, her excitement and joy have been evident, and it's easy to see why. This smartwatch has seamlessly integrated into her lifestyle, offering a multitude of features that cater to her needs and preferences. Here's why my mother-in-law absolutely loves her Samsung Galaxy Watch 4.

Elegance and Style:
The Galaxy Watch 4's elegant design has instantly won my mother-in-law over. Its sleek, modern aesthetic appeals to her sense of style, and she loves how it effortlessly complements both casual and formal outfits. The choice of customizable watch faces allows her to personalize the watch to match her mood and look.

Comprehensive Health Monitoring:
My mother-in-law's well-being is a top priority, and the health monitoring features of the Galaxy Watch 4 have become invaluable to her. From heart rate tracking and sleep analysis to blood oxygen monitoring and ECG readings, the watch provides a holistic view of her health, empowering her to make informed decisions about her lifestyle.

Fitness and Activity Tracking:
Staying active is essential to my mother-in-law, and the fitness tracking capabilities of the Galaxy Watch 4 have become her trusted companion. Whether she's walking, cycling, or practicing yoga, the watch accurately records her activities and offers real-time insights to keep her motivated and engaged.

Convenient Notifications and Connectivity:
The watch's ability to receive notifications from her smartphone is a feature my mother-in-law adores. She no longer misses important calls, messages, or calendar events while she's on the go. The watch's seamless connectivity has simplified her daily routines and keeps her informed at all times.

Intuitive User Experience:
Navigating the features and functions of the Galaxy Watch 4 has been a breeze for my mother-in-law. The user interface is intuitive and user-friendly, ensuring that she can access the information she needs with ease.

Versatile Lifestyle Companion:
From tracking health metrics to answering calls on the go, the Galaxy Watch 4 seamlessly integrates into my mother-in-law's daily life. It's the perfect balance of functionality and convenience, offering features that cater to her varied interests and activities.

Long Battery Life:
My mother-in-law appreciates the watch's impressive battery life. With reliable performance throughout the day, she doesn't have to worry about recharging frequently, allowing her to stay connected without interruption.

Enhancing Every Moment:
Above all, the Samsung Galaxy Watch 4 has enhanced my mother-in-law's everyday experiences. It empowers her to prioritize her health, stay connected with loved ones, and enjoy the convenience of smart technology"”all while looking stylish and sophisticated.

In conclusion, the Samsung Galaxy Watch 4 has brought immense joy to my mother-in-law's life. Its blend of elegance, health features, fitness tracking, connectivity, and ease of use has seamlessly integrated into her daily routine. As a loving family, we're thrilled to see how the watch has become an essential part of her life, enhancing her well-being and keeping her connected to the things that matter most. It's a testament to the watch's ability to cater to a range of needs and preferences, making it a truly remarkable accessory for anyone seeking style, functionality, and connectivity in one elegant package.