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Samsung

Samsung Galaxy Watch 3 (45mm, GPS, Bluetooth) Smart Watch with Advanced Health Monitoring, Fitness Tracking, and Long Lasting Battery - Mystic Black (Renewed)

  • Based on 7,368 reviews
Condition: Refurbished - Excellent
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, May 26
Order within 9 hours and 55 minutes
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Color: Mystic Black


Features

  • Galaxy Watch3 combines powerful technology with a premium, customizable design so you can manage the day-today from your wrist, beautifully.
  • Keep an eye on wellness with advanced health monitoring, and go for days without charging.
  • Keep an eye on your fitness and health with SpO2, VO2 max, and heart-rate monitoring. Help is just a tap away if you stumble. And track your cycle in an easy and discreet way. *This device and related software are not intended for use in the diagnosis of disease or other conditions, or in the cure, mitigation, treatment or prevention of disease. SPO2, VO2 max and running coach features not available at the time of launch, will become available during Q3. Features will require a software update.
  • Galaxy Watch3 combines styletwo sizes, three colors, 50,000-plus watch faces and premium leather bandswith military-grade durability and water resistance.
  • Spend your time moving while Galaxy Watch3 tracks seven popular activities automatically. Get more out of each movement thanks to a built-in run coaching.

Description

Spend your time moving while Galaxy Watch3 tracks seven popular activities automatically. Get more out of each movement thanks to a built-in run coaching.

Operating System: Tizen 3.0


Memory Storage Capacity: 8 GB


Special Feature: Accelerometer, GPS, Activity Tracker, Heart Rate Monitor, Music Player, Notifications, Oxymeter (SpO2), Phone Call, Sleep Monitor, Text Messaging, Voice Call, Time Display, Wireless Charging See more


Battery Capacity: 250 Amp Hours


Connectivity Technology: Bluetooth, GPS, NFC, Wi-Fi


Wireless Communication Standard: Bluetooth


Battery Cell Composition: Lithium Ion


GPS: True


Shape: Round


Screen Size: 34.5 Millimeters


Operating System: Tizen 3.0


Additional Features: Accelerometer, GPS, Activity Tracker, Heart Rate Monitor, Music Player, Notifications, Oxymeter (SpO2), Phone Call, Sleep Monitor, Text Messaging, Voice Call, Time Display, Wireless Charging


GPS Geotagging Functionality: True


Band Material Type: Leather


Case Material Type: Stainless Steel


Water Resistance Level: Water Resistant


Sport Type: Running


Human Interface Input: Touchscreen


Clasp Type: Tang Buckle


Supported Application: GPS


Water Resistance Depth: 50 Meters


Supported Satellite Navigation System: GPS


Controller Type: SmartThings


Metrics Measured: Blood Oxygen, Calories Burned, Distance, Heart Rate, Sleep Duration, Step Count


Closure Type: Buckle


Shape: Round


Style Name: Modern


Color: Mystic Black


Band Color: black


Screen Size: 34.5 Millimeters


Display Type: AMOLED


Resolution: 360 x 360


Compatible Devices: Smartphone


Compatible Phone Models: Android Devices IOS Devices


Memory Storage Capacity: 8 GB


RAM Memory Installed: 1 GB


Brand: Samsung


Model Name: Galaxy Watch3


Target Audience: Unisex Youth


Age Range Description: Adult


Model Number: SM-R845U


Built-In Media: Battery


Warranty Description: 90 days limited warranty


Wearable Computer Type: Smart Watch


UPC: 649661269410 649661088776


Global Trade Identification Number: 10


Manufacturer: Samsung


Battery Capacity: 250 Amp Hours


Battery Cell Type: Lithium Ion


Battery Power: 340


Connectivity Technology: Bluetooth, GPS, NFC, Wi-Fi


Wireless Compability: Bluetooth


Wireless Provider: Unlocked


Cellular Technology: 4G


Communication Feature: Bluetooth, GPS, NFC, Wi-Fi


Sim Card Size: eSIM


Item Dimensions: 1.82 x 1.77 x 0.44 inches


Warranty Type: Limited


Waterproof Rating: IP68


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 26

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • First smart watch, I like it
Color: Mystic Black
This watch is pretty great. I bought it was a renewed watch since I wasn't sure how much I'd like having a smart watch, but I'm pretty happy with it. It's my first smart watch; I bought it originally to keep track of my steps/general fitness and for the obvious time function itself. For the most part, I haven't had issues with it. I've dropped it a couple of times, I've dropped something onto it and smacked it into something when swinging my arm around, but there's no obvious damage to it at all, it still functions as intended. The wristband is also holding up surprisingly well, given that I've had it for over a year from when I originally bought the watch (ordered it 5 Feb 24). My ONLY real grievance about this watch is, because I wear it on my left wrist, when I bend my hand back enough it'll trigger the buttons. During exercise, this'll pause my workout tracker; outside of exercise, it can trigger one of the trackers to start tracking something I'm not actually doing. Both are annoying, but they're minor inconveniences. Otherwise, it does what I want it to: tracks my steps, fits correctly, tracks my workouts, tells me the time. The "AI" function on it, Bixli, is kind of useless? I don't know. You have to yell at her to make her listen, and even that's a struggle. I've tried her out a couple of times and it didn't go well, so I just disabled the function. The other features are good though, and there's apps you can download if you want to really personalize your watch face. Otherwise, Samsung does have a lot of good ones to choose from in the watch itself. Oh, I've also taken this watch swimming and into the shower and it did just fine. The water might trigger a sensor to where it thinks you're trying to do something on the watch if it hits it just right, but otherwise no issues. It also has a water "remover" function that you can scroll to and it'll vibrate to shake the water out. The battery life is pretty good. I usually charge it every night or every other night, especially if I know I'm going to the gym, but general use it goes around 2-3 full days before it needs another charge. Obviously, the more you use it, the sooner it'll need to be recharged. You can just slap it onto the charger base and you're good, it doesn't take long to recharge at all. For example: right now, my watch is on standard power mode and says 88% battery left. It estimates it has 2 days, 5 hours, and 21 minutes of battery life left. It was fully charged this morning, before I put it on and went to the gym. The text function is also good, you can read texts pretty quickly and it has quick responses for you to send, or you can write something out on your watch face, but that obviously is a little more time consuming. Phone calls also go through and you can answer them on your watch, so that can be a handy function as well, but I rarely use it. It obviously has other functions/apps you can add to it, but I'm just telling you what I use and what works for me. Overall, I'm happy with this watch. I recommend it if you just want something simple for time and tracking things. ... show more
Reviewed in the United States on October 28, 2025 by Kristi
    • Very durable. Has enough compatibility with an iPhone 12 and 15 pro. 2 day battery life.
Color: Mystic Black
Review Image by Tadd
This has been a very good watch. The battery life can go 2 days on a full charge. It gives me the basic notifications and functionality that I want in a smart watch. This size and weight are less than my Fossil watches. Extremely good value for the price and it looks great! I don't like the look or the price of the apple watch and ice been an android user until the last 3 years or so. I It stays connected and some time ago the find my phone feature stopped working. This model I believe is the last model that works with the iPhone as the newer ones are not compatible. The band that came with it didn't last more than a few months but that's okay. The first replacement only lasted a few months, the 3rd one lasted about 7 months as you can see in the picture. I would definitely buy this watch again. ... show more
Reviewed in the United States on August 25, 2024 by Tadd
    • Great Product and Affordable
Color: Silver
Review Image by jorge insurriaga
It arrived in a timely manner, well packaged and looked great. It was easy to sync with my phone and so far, it has been working great. Overall, it was a great purchase at an affordable price.
Reviewed in the United States on January 20, 2026 by jorge insurriaga
    • Good first smart watch
Color: Bronze
My first smart watch and I am satisfied. For a refurbished watch, it worked great and paired well with my android phone. No issues with functions. I like the color, I've always gone for a neutral look. Only issue was the strap and band metal springs were a size too big/wide. Had to purchase my own.
Reviewed in the United States on May 2, 2026 by Mayra
    • Overall, Quite Pleased.
Color: Bronze
Review Image by _althealater
Review Image by _althealater
Review Image by _althealater
This was my first time buying a refurbished electronic item from Amazon, so i was a little sketched out and combed the reviews before i bought. Some of the other reviews stated their watch came scratched, but mine did not. Back and front of the watch are perfect, like new. Others stated they didn't get any instructions included, but who cares, that's literally what the internet is for. And anyway set-up was easy, it connected to my Note 10+ almost immediately. A few reviews mentioned that the battery life was not great. This is one point i can agree on. I can say that I'm a teeny bit disappointed at how fast it drained, but I'll chalk that up to setting the watch up and spending time customizing the watch's features. At any rate, even if the battery endurance doesn't improve, I could easily spend the money to have the battery replaced, and this watch would still be MUCH cheaper than other options at the same quality. So i would say it's still a great value. Other than that, I'm pretty happy with the watch. Sleep tracking seems accurate, as do the other biometric tools, and that was a big reason i wanted a Galaxy Watch (Samsung removed them from the Note 10 series, and I've missed it since i got this phone!) Another reason I specifically wanted a Galaxy Watch was because of the store. There are literally thousands of customization options and various apps that you can download from the Galaxy Store, and that's something you won't get with no name knock-offs. To me that makes this watch capable of being a thousand times more productive than some generic watch. This alone makes it absolutely worth it, in my book. Overall, VERY pleased with my purchase and I'd do it again in a heartbeat. No name knock offs may be half the price, but if you spend the extra money and go ahead and get the refurbed Galaxy watch, you won't be disappointed! ... show more
Reviewed in the United States on March 29, 2022 by _althealater
    • Great product,Great price
Color: Silver
Always wanted but not the high cost. One dislike "no calculator ". Lol
Reviewed in the United States on April 18, 2026 by kod07

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