Samsung

SAMSUNG Galaxy Watch 4 40mm Smartwatch with ECG Monitor Tracker for Health Fitness Running Sleep Cycles GPS Fall

810+ bought in the past month

$69.00$149.99

About this item

  • BODY COMPOSITION ANALYSIS: Galaxy Watch4 is the first smartwatch to off body composition data right on your wrist, On your own schedule, now you can get readings on body fat, skeletal muscle, body water, basal metabolic rate, and Body Mass Index.Supported Application:Fitness Tracker,GPS,Sleep Monitor. Connectivity technology:Bluetooth. Wireless comm standard:Bluetooth
  • 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
  • EXTENSION OF YOUR PHONE: Put the phone features you need right on your wrist and stay connected to calls, texts, notifications, and music streaming, all accessible with a simple tap
  • GOOGLE ON YOUR WRIST: Tap into the power and convenience of select Google services and apps right from your wrist; Pay for coffee; Get directions to the park; Use Bixby or Google Assistant for help on almost any topic; Stream your favorite tunes on YouTube
$69.00
Was $149.99Save $80.99

In Stock

DeliveryEstimated 3–5 business days · Final delivery speed and cost are confirmed at checkout
Easy Returns · 30-day window
This order is a gift

In Stock

Secure Checkout
Free Returns
30-Day Guarantee
Secure checkoutAll transactions are SSL-encrypted. Your payment info is never stored.
Free returnsReturn or replace within 30 days
Fast deliveryOrders ship within 1 business day and arrive in 4–8 days.
Buyer protectionIf your order arrives damaged or doesn't show up, we'll make it right.
24/7 supportOur team is here to help. Reach us anytime by email or chat.
Ships fromOur Warehouse
Sold byAmazon Resale
Returns
Easy Returns30-day return window
PaymentsSecure transaction
Currently unavailable
Easy Returns · 30-day window

Product details

Operating Systemandroid 6.0
Memory Storage Capacity16000 MB
Special FeatureECG, Sleep Monitor, Activity Tracker, GPS, Bluetooth, Heart Rate Monitor, Wireless, Daily Workout Memory, Notifications, Music Player See more
Connectivity TechnologyBluetooth
Wireless Communication StandardBluetooth
Battery Cell CompositionLithium Ion
GPSTrue
ShapeHeart,Irregular
Screen Size1.2 Inches
BrandSamsung

Technical specifications

product_dimensions1.59 x 1.55 x 0.39 inches
item_weight0.914 ounces
item_model_numberSM-R860NZSAXAA
batteries1 Lithium Ion batteries required. (included)
best_sellers_rank#25,754 in Electronics ( See Top 100 in Electronics ) #75 in Men's Smartwatches #617 in Smartwatches
osandroid 6.0
wireless_communication_technologiesBluetooth
connectivity_technologiesBluetooth
gpsTrue
special_featuresECG, Sleep Monitor, Activity Tracker, GPS, Bluetooth, Heart Rate Monitor, Wireless, Daily Workout Memory, Notifications, Music Player
other_display_featuresWireless
human_interface_inputTouchscreen
scanner_resolution396 x 396
colorSilver
whats_in_the_box1. Galaxy Watch4 Case + Inbox band 2. Wireless Charger 3. QSG
departmentmens
manufacturerSamsung
date_first_availableAugust 11, 2021
weight25.9 Grams
standing_screen_display_size1.2 Inches
memory_storage_capacity16000 MB
ram_memory_installed_size1.5 GB

From the brand

Product detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detail
Product detailProduct detailProduct detail

Product videos

Product video 1

Customer reviews

4.629,733 ratings
★★★★★

Solid android-compatible smart watch

JJAmazonShopperMay 13, 2025

I decided to upgrade from a fitness band/watch garmin device to this smart watch. I know there are about 3 subsequent versions of this, but mine still works very well after over 2 years. Positives: - I like being able to see at least part of incoming text messages so I can decide if I need to pull out my phone to read them on a larger screen. - The do-not-disturb feature is very helpful in muting text messages when I can't afford interruptions - I do like the variety of fitness tracking options, as well as health and sleep - The battery life is still pretty good even after several years Negatives/downsides: - I still find it hard to cancel notifications rather than just snooze them (the swipe to clear feature doesn't always work--could be the screen protector I use) - It took me a while to realize that having the watch on DND means that calls won't go through on my phone even if the volume is on for that device - Battery does have to be charged each night, which limits the usability for sleep tracking (unless I charge it earlier and then can't track activity/steps) Overall still a quality device and I haven't been compelled to upgrade yet. Read more

★★★★★

Very Nice product

Dan BaxleyMay 13, 2023

05/13/2023: A really, really nice smartwatch. My wife has an Apple watch and it is nice, but I have to say that this Samsung 4 is a notch better. Her watch cost $280 after a deal with her phone service. My Samsung 4 was just under $90 from Amazon, and it is a real beauty. I am still learning some things about it, but love it, love it. Quality plus. But, another BUT -- like the Apple Watch, the battery life is terrible. You have to charge it every day -- that is, unless you shut everything off, or down. There is a feature on the watch, where you can select Battery Saver features. Still, so disappointed in battery life. I have a cheap smartwatch that gets me 5 plus days, and it does nearly all of the things needed to keep track of sleep and Heart rate. The cheap watch also has a Blood Pressure reading -- yep, BP. On the other hand, the Samsung 4 has ECG, which is pretty cool, and it keeps a running record that you record for your doctor. I will be trying the different settings on the Samsung, after all, I do not need all of the features that come with the Samsung 4. But, like many others, I do wonder why the cheap smartwatches are able to get so much use out of their batteries, as opposed to these HIGH priced, name-brand watches. As it is, if you plan on using the sleep feature, then you will need to charge every day, or night before going to bed. Getting 2 days of use is a pipe dream if you use the watch to track your movements and monitor your cell phone and massaging, which I do not really need, but it is pretty handy. Maybe you could get 2-3 days, if you shut everything but the TIME off. I will find out. Remember, by shutting all of the AUTO features off, you still have access to manually use, or turn on a feature you want to use for the moment. What a nicely built watch -- more later -- 05/15/2023 Update: Battery life is terrible. You can extend the battery life by shutting everything off, but that defeats the purpose of having one of these Smartwatches, right? Last night, as I went to bed, shut everything down, leaving only the sleep mode on, with a full charge. Got up this morning and it had 86% left. I turned everything back on, played with the settings, on, off, and other features, etc. Also, had to reconnect to my phone to record my sleep activity. I have been up for 2 hours now and the battery reads, 45%. I got up, just under 2.5 hours ago, activated the watch, turned wifi back on to communicate with my Samsung Galaxy 22 phone, and have already used up half the battery capacity. My wife says it is not big deal, after all, she has to recharge her Apple watch every day. Great, so that makes me NOT feel better, not after owning some cheapy watches that never needed charging for 5-7 days, and they tracked my sleep, my BP, my steps, and, really, the cheapy apps were easier to navigate. Seriously, the Samsung is a beauty, but am I really buying jewlery? Read more

★★★★★

Good but battery life sucks

SammieMay 10, 2022

because it is kinda like an iphone on your wrist, it takes up a lot of batteries. If I turn on power-saving mode and pick the most simple watch-face, then from 6am-8pm I will have 64% left when I don't receive text message or text back. Images are good, almost like looking at my phone, contrast, colors, and accuracy of pixel is good. Texting- I like how I can text talk and it'll respond in what I say. This usually drops my battery life most. Btw, the texting language has to be the language of the programmed language of the watch, so don't try to respond using voice-texting in a diff language than the one programmed on the watch. Like if I programmed it as "English", I can voice-text only in english and not Vietnamese or Spanish. Sleep-monitoring- in the morning it'll tell me how many hours of sleep, light-sleep, REM, and more. It's good, through the pulse-oximeter reading of my sleep patterns, I learned I had sleep apnea. It gives a range of your Pulse-Ox when you sleep at night like 85-95% detailing perhaps that night I was more stressed and didn't work out, so lung capacity decreased. It's a good monitoring tool. Water-resistant- I'm a nurse at a hospital, I wash my hands all the time, so far no water issues. I never had to turn on the water resistant option, and use it all the time. Though, after 12 hours, the heaviness of the watch drains me, so I like to give my wrist a break and take it off to charge. Battery life- I have to charge daily with this, can't go a day without it. But the upsize is that it charges QUICKLY. Within 15 minutes of charging, it can go from 15% to 50%, and from 85% to 100%. It charges quickly, but drains quickly too. Phone reception- I used it once or twice bc I don't use my phones for calls much but more for instant messaging. Clear reception, my mom heard me well, and we were able to carry a convo while I shopped at Walmart. Wouldn't recommend using this option in confined space though. Steps- it over calculates my steps, giving me the impression that I've walked longer, but no. EKG- It's good, idk how accurate it is, but so far it's good. Benefits- when you are on GPS mode, it'll have it on your watch, and beeps or vibrates when a turn or stop is needed. Really cool, in case you lose your phone while driving, or don't have a phone holder in your car, this function is cool. Read more

Recently Viewed