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

$69.00$149.99

1819+ bought in the past month

About this item

  • 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
  • - This pre-owned product has been professionally inspected, tested and cleaned by Amazon-qualified suppliers.

Key details

color_spec
Black
Operating System
Wear OS
Memory Storage Capacity
16 GB
Special Feature
GPS
Battery Capacity
247 Milliamp Hours

Dimensions and fit

dimensions
1.59 x 1.55 x 0.39 inches
weight
0.8 ounces
Screen Size
1.2 Inches
product_dimensions
1.59 x 1.55 x 0.39 inches
item_weight
0.8 ounces
standing_screen_display_size
1.2 Inches
ram_memory_installed_size
1.5 GB

Technical specifications

item_model_number
Galaxy Watch4
battery_power_rating
247 Milliamp Hours

Item information

Connectivity Technology
Bluetooth
Wireless Communication Standard
Bluetooth
Battery Cell Composition
Lithium Ion
GPS
True
Shape
Heart,Irregular
batteries
1 Lithium Ion batteries required.
best_sellers_rank
#1,067 in Amazon Renewed ( See Top 100 in Amazon Renewed ) #62 in Men's Smartwatches #95 in Renewed Smartwatches #536 in Smartwatches
os
Wear OS
ram
1 GB
wireless_communication_technologies
Bluetooth 5.0
connectivity_technologies
Bluetooth
special_features
GPS
display_technology
AMOLED
other_display_features
Wireless
human_interface_input
Touchscreen
scanner_resolution
396 x 396
color
Black
whats_in_the_box
Band, Charger, Watch
department
mens
manufacturer
Samsung
date_first_available
October 3, 2021
memory_storage_capacity
16 GB
Highlights

About this item

  • 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
  • - This pre-owned product has been professionally inspected, tested and cleaned by Amazon-qualified suppliers.

Product videos

Product video 1

Customer reviews

1,372 reviewsPositive

Rated 4.2/5 across 1,372 reviews — well received overall.

  • 63% of sampled reviews give 4–5 stars.

Customers say

Customers find the smartwatch to be in great condition, looking new, and offering good value for money.

Generated from the text of customer reviews

Reviews with images

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★★★★★

Good but large smart watch

First off, the seller I got this from was great. Arrived on time. Watch didn't have a single scuff or smudge on it. Literally like new. Box is generic, but everything inside looks original including the charger and the manuals. The battery was a little low (56%) when I got it, so I gave it a charge before set up and it was full in no time. Watch itself is great. Easy set up as long as you follow the directions and use the app. Picked a simple watch face and called it good. The main complaint I saw about this watch is the battery life. I read up before getting it and adjusted settings right off the bat. I don't keep the face on all the time (1. For battery life and 2. Some users had screen burn) I don't care much for the health things, so I have all preferences like the bpm monitor set to manual so I use them as I see fit instead of them either going continuously or every 10 minutes. If you have bad eyesight like me, use the large font setting And for the love of everything, download the Gboard app. Like literally right out of the box past set up, get it. Otherwise you have to use T9 and text like it's 2000 again. The only downside (for me) is I have tiny wrists and the standard band is way too large. There are large gaps on either side. This isn't really a downside, I just had to spend a little extra on a new band. No biggie. Over all, great watch. I may just get my partner one too. (It now has a walkie-talkie app!) Read more

Customer review image for Good but large smart watchCustomer review image for Good but large smart watchCustomer review image for Good but large smart watchCustomer review image for Good but large smart watch
Customer
★★★★★

Love, Love, Love

I was worried about it being refurbished. I've had bad luck before. This watch has exceeded my expectations. Battery life is short-ish. I get about 3 days on a charge, but I use it endlessly. Constant heart monitoring, messages, music, all of it. I cannot complain at all. This is my 3rd Galaxy watch and by far is my favorite. I've had it for 2 months now and I am always finding new things it can do. Love love love! Read more

Nikki Fox
★★★★

Love it so far!

My samsung watch looks and works good. The band looks and feels new, very comfortable. I think it may have had some grime left in the corners of the screen edge. But otherwise looks new. No blemishes or scratches. 40mm. Has great features like sleep tracking and heart rate and activity monitoring. I charge mine for under 30 minutes in the morning and the evening. Battery life seems to depleate quickly. Amazing watch for the price. (Refurbished) Read more

Customer review image for Love it so far!
Amber
★★★★★

Love my samsung watch

Long battery life, no damages after being in water without waterproof mode on, all apps and buttons function well, brightness is adjustable to comfort of the eyes, its literally a phone on your wrist, fits perfect with all my outfits and I can use to track my steps along with be in the know about my health and monitor my stress levels. Wrist bands are easy to change Read more

Reeces
☆☆☆☆

**Buyer Beware, Poor Quality "Refurbish"**

The watch itself is fine. It works like it should. The charger they sent with it, however, is complete garbage. It's an off-brand knock-off, and routinely fails to charge the watch at all over the course of a day, maybe even draining it faster. I know it's the charger, because we tried an on-brand charger and it's worked every single time. So just know you'll probably want to get an authentic charger if you order this. **Update** After 5 months, the battery no longer charges. At all. We have left it on the known *good* charger (the original charger that came with and still reliably charges mine, same make and model) for several days now and it's *still* dead. Avoid this product. Either their quality control sucks, or they're intentionally scamming customers with bad "refurbishments." Read more

Isaac Schmitt
★★★★★

Very good purchase

Love this watch. It does everything I wanted it to do. Just wish the battery lasted longer. You do have to charge it every day.Display is very good and clear. It has a good selection of features. Even though you have to charge it everyday, it charges fast. Read more

melissa bailey
★★★★★

See to work as well as the Fitbit I had that died for sleep tracking and pulse. BUT ...

The ban that comes with it is garbage, but I bought one of the expandable nylon (?) bands. That works WELL to hold it on write firmly - which is necessary for all the health functions. Sleep tracking works at least as well as my HR2 - and I believe somewhat better. I am using the Oxygen sensing while sleeping as well as heart rate. The ECG will ONLY detect AFib as a diagnosis - but you can look at the trace - especially on phone app and get a good idea. It would be better it is was lead II rather than lead one. For example, with lead one you are not really seeing atrial flutter at all. With lead 2 you can. But to do that they would have to go between left leg and right hand. I do that with a handheld ECG - and that allows me to see much more. Overall seems well designed - and my only beef is the vibration. The Fitbit HR2 would reliably wake me with the vibration mode - which did not disturb my wife. Not so with the S4 Watch. I can barely feel the vibration with I am awake and just sitting at my desk. The need a MUCH stronger vibrator. IF you turn off the functions you do not need - and you do not use always-on display - you can easily get more than a days out of the battery. Leave everything on as it comes from the factory - and you will be lucky to get a half day. Look for an article on internet of "what to do to optimize battery life, etc" on the S4 Watch. Read more

S. W. Conley
★★★☆☆

Let's see how this one works out

I got this watch yesterday earlier than expected. The battery only lasted a couple hours but I am guessing that's because of all the updates. It took a while to connect to the phone. It also had a few scratches but nothing worth sending it back for. It came in the original box and had the original charger along with it Read more

Customer review image for Let's see how this one works out
Chrissy
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