Best ECG Monitor Smart Watches of 2025

"I'm really enjoying this watch. I got it at a bargain price, coming from a frustrating Amazfit. This refurbished Samsung watch feels brand new and works perfectly with my Samsung phone. The battery life is impressive; I still have 75% after a full day of use!"

"I received the watch five days early in excellent condition, almost like new. It doesn't come with the original box or charger, but everything else works fine. The battery does drain quickly when both Wi-Fi and Bluetooth are on, but I’m happy overall with my gifted watch!"

"Setting up this watch was a breeze, even for me as a Senior Citizen. The ECG feature is useful for my A Fib condition. I only need to charge it once a day, which is quick. It's a great value for the price!"

"This watch has been a fantastic addition to my health journey. The Samsung Health app provides useful data from the watch's monitoring. Using it with my Samsung phone is super convenient, and the altimeter is impressively precise. Plus, I can even talk to people through my watch—it's like living in a sci-fi world!"

"I was pleasantly surprised by how easily the watch linked to my Samsung phone and the EKG monitoring feature exceeded my expectations. While the battery life could be better, I'm overall very satisfied with the watch and would definitely recommend it."

"After a few months of using this watch, I've found myself returning to my Fitbit Sense. Battery life is poor; I have to recharge it daily, or it dies while I'm wearing it. The promised apps, like ECG and blood pressure, do not work here in the US. There’s a convoluted workaround, but it’s a hassle. However, I’ve grown to appreciate it more over time, especially its reliability compared to the Fitbit, even if I still have to charge it every morning."

"I purchased this watch for its features. After my heart surgery, it allows me to do an ECG to monitor my Afib, which gives me reassurance. While I know it's not medical-grade, I appreciate being able to check it myself. It tracks my steps, sleep, and heart rate well. I think it’s a solid watch, though a bit bulky, and the battery could last longer."

"I found this watch to be a great gift option with many features, but I noticed that the battery life isn't very long. However, I do think it looks pretty cool!"

"My watch arrived in perfect condition, but it came completely dead. After charging it with the included puck, it booted up just fine. This is a great choice for anyone looking for an older model, especially for kids or as a personal gift."

"I was initially hesitant about purchasing a renewed product, but after using it for a while, I can confidently say it works great. The battery lasts about one day, which might not suit sleep tracking users, but overall, I’m satisfied."

"Switching from Apple to Android has been a refreshing change for me. This watch provides superior customization and charging options compared to my Apple watch. By adjusting settings to conserve battery, I’ve found that I can enjoy all its features without draining the battery too quickly. Plus, I love the always-on display!"

"I was pleasantly surprised by the condition of the watch; it looked almost brand new. I’ve had it for two years now without issues. The battery life is decent, but I’m thrilled that Samsung rolled out the WearOS 5 update for this older model. It’s still a great watch for the price!"

"I was pleasantly surprised to find a decent Samsung smart watch at such a low price, even refurbished. I really like it! My previous Samsung watch made it easy to adjust to this one. It came with a quick start guide and charger, which were great. It has all the features I was familiar with, plus extra ones, like the flashlight, which I found handy. The battery lasts about two days with basic tracking, which is on par with my old watch. I was thrilled that a lot of my settings transferred over. Overall, I'm very happy with my purchase!"

"I've had this watch for a few weeks now, and I have no complaints. I was a bit skeptical due to some negative reviews about the battery life but found that if you charge it properly, it works just fine. I worked 10-12 hour shifts and still had over 60% battery left by the time I got home. I wear it to track my sleep, and it doesn’t die overnight. If you take care of it, it will serve you well!"

"I really wanted to love this watch, but I faced a few issues. The battery doesn't hold charge well at all. Even when fully charged, it barely lasts a few hours overnight. Also, the software was outdated, and I had to deal with multiple updates, which took a long time. The watch is spotless and cute, but I might just give it to my husband since it's too big for me. I'll probably look for a brand new one instead because of the battery problems."

"This Samsung Galaxy Watch 4 is a stylish and capable smartwatch. I really appreciate the robust health and fitness tracking features, especially the accurate readings for steps and heart rate. The ECG monitor and fall detection give me valuable peace of mind. Although the battery life could be slightly better, it remains a fantastic companion for staying active and connected."

"I think this smartwatch is really nice. I have to say, it's a notch above my wife's Apple Watch. I got mine for just under $90, while hers was $280. Even though I'm still figuring it out, I absolutely love it. However, I do wish the battery life was better. I find myself needing to charge it every day, which can be frustrating compared to my previous cheaper smartwatch that lasted 5+ days."

"I'm a nurse and use the watch daily; it’s been great! The water-resistant feature is fantastic for my handwashing routine. However, I do have to charge it every day, which seems to be a common theme. On the bright side, it charges quickly. I’ve noticed it goes from 15% to 50% in about 15 minutes. Overall, it’s a good monitoring tool, although the watch feels heavy after wearing it for a while."

"I've had this watch for close to a year now, and it works great. It syncs perfectly with my Samsung Galaxy and does everything you would want it to. I bought it used, and it's in great quality. My only complaint is the wristband; while it works well, the paint rubbed off the metal pieces. Also, charging every 24 hours is a bit inconvenient."

"I bought this watch as a gift for my nephew. It arrived quickly, is scratch resistant, and has some cool features according to him. It holds a good charge and was decently priced. I'm pleased with the purchase."

"This watch is everything I was looking for. It tracks my health effectively and signals notifications when I'm busy. However, the only downside is that the battery doesn't last very long. Hopefully, an update can improve this, or I might consider upgrading the watch in the future."

"I received the renewed Galaxy watch, and the delivery was timely. It came with a band and charger, and I was delighted to find it in excellent condition. Setting it up and pairing it with my Samsung Galaxy phone was a breeze. The battery lasts all day, and I just make sure to charge it at night. Overall, a great purchase for the price!"

"As a long-time Fitbit user, I can say this watch is a game changer. I love the customization options for the home screen, and the ECG feature is fantastic. However, the charger and wall box didn’t work, which made me nervous initially. Thankfully, I had access to an OEM charger, and everything worked perfectly after that."

"I received two watches, and while I loved the rose color and size, the battery life on one was quite disappointing. It would go from fully charged to dead in just an hour, making it necessary for me to carry the charger with me. The other watch had issues with overheating and would shut down. Unfortunately, I had to return both watches."

"I've had my watch for almost a year now, and it has been incredibly helpful. I take good care of it since it's precious to me. I accidentally wore it in the shower for a minute, but it still works perfectly. I mainly use it for telling time, setting timers, and staying in touch with family while driving. Charging is simple, and it takes about an hour for a full charge. With regular use, it lasts about a day and a half, but I use battery saver mode and can stretch it to almost two full days. I track my sleep with it, charging it during dinner. There are features I don't use much, and some apps only work on my phone, but it effectively tracks steps, heart rate, and stress levels. I can also control media sound and easily locate my phone with the watch."

"After switching from my S3 to the S4, I've been really impressed. The battery could last longer, but overall, it's a fantastic watch."

"Having owned multiple Android-compatible smartwatches, I can confidently say this is the best one yet. The new operating system is stunning, the performance is fast with no lag, and the aesthetic is perfect for me. The health sensors are impressive, and now I can access Google Maps, Google Pay, and Android Messages easily. If you're an Android user interested in a smartwatch, this is the one to get!"

"I'm really pleased with the stylish design and how it tracks swimming. The weight and sleep tracking features are also fantastic, even if the battery life isn't the best; it's manageable for me."

"Initially, I enjoyed using it, but after the recent updates, I noticed a significant drop in battery life. Now, I find myself charging it every 1.75 days, which is a bit inconvenient."

"I love how Samsung allows customization of watch faces. The black face looks fantastic, and the product works as described. I did have some trouble with the pairing instructions, but it wasn't a major issue."