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Samsung

Samsung Galaxy Watch 4 40mm Smartwatch with ECG Monitor Tracker for Health Fitness Running Sleep Cycles GPS Fall Detection LTE US Version, Black (Renewed)

  • Based on 1,019 reviews
Condition: Refurbished - Excellent
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Availability: Only 2 left in stock, order soon!
Fulfilled by Amazon
Arrives Saturday, May 30
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Size: 40 mm


Style: LTE


Color: Black


Features

  • 1.2 "(30.2mm) Super AMOLED, 396 x 396 pixels (~330 ppi density), 16M Colors, CPU: Dual-Core 1.15GHz, 247mAh Battery, Android Wear OS, One UI Watch 3, Bluetooth, Wi-Fi
  • The Galaxy Watch4 uses red LEDs and infrared rays to calculate your SpO2 levels or the amount of oxygen in your blood.
  • Glass front (Gorilla Glass DX+), MIL-STD-810G compliant, 50m water-resistant (IP68), Compatible with standard 20mm straps, ECG certified, Blood pressure monitor
  • Sensors: Accelerometer, Barometer, Gyro Sensor, Geomagnetic Sensor, Light Sensor, Optical Heart Rate Sensor, Electrical heart sensor, Bioelectrical Impedance Analysis Sensor
  • Cellular LTE model Compatible with Cellular Network, Contact Carrier to Register on your account. Compatible with Android devices. Supports Samsung Pay. 4G LTE Bands: B2 (1900 MHz), B4 (1700 MHz), B5 (850 MHz), B12 (700 MHz), B13 (700 MHz), B25 (1900 MHz), B26 (850 MHz), B66 (1700 MHz), B71 (600 MHz) - Please check if compatible with your carrier.

Description

This pre-owned or refurbished product has been professionally inspected and tested to work and look like new. How a product becomes part of Amazon Renewed, your destination for pre-owned, refurbished products: A customer buys a new product and returns it or trades it in for a newer or different model. That product is inspected and tested to work and look like new by Amazon- qualified suppliers. Then, the product is sold as an Amazon Renewed product on Amazon. If not satisfied with the purchase, renewed products are eligible for replacement or refund under the Amazon Renewed Guarantee.

Operating System: Android


Memory Storage Capacity: 16 GB


Special Feature: GPS, Sleep Monitor, Time Display


Battery Capacity: 247 Milliamp Hours


Connectivity Technology: Bluetooth, Cellular GPS


Wireless Communication Standard: Bluetooth


Battery Cell Composition: Lithium Ion


GPS: True


Shape: Heart


Screen Size: 40 Millimeters


Operating System: Android


Additional Features: GPS, Sleep Monitor, Time Display


GPS Geotagging Functionality: True


Band Material Type: Black


Case Material Type: Aluminum


Water Resistance Level: Water Resistant


Sport Type: Fitness, Running


Human Interface Input: Touchscreen


Supported Application: Blood Pressure Monitor, GPS, Heart Rate Monitor, Sleep Monitor


Water Resistance Depth: 50 Meters


Supported Satellite Navigation System: GPS


Controller Type: Android


Metrics Measured: ECG, Optical Heart Rate, Pulse Oximetry


Closure Type: Buckle


Shape: Heart


Style Name: LTE


Color: Black


Band Color: black


Connectivity Technology: Bluetooth, Cellular GPS


Wireless Compability: Bluetooth


Wireless Provider: Unlocked


Cellular Technology: LTE


Communication Feature: LTE, Bluetooth


Sim Card Size: eSIM


Band Width: 20 Millimeters


Item Dimensions: 7 x 4 x 5 inches


Warranty Type: Limited


Waterproof Rating: IP68


Brand: Samsung


Model Name: galaxy


Target Audience: Unisex Adult


Age Range Description: Adult


Model Number: SM-R860, SM-R870


Built-In Media: Band, Charger, Watch


Warranty Description: 90 days limited warranty


Wearable Computer Type: Smart Watch


UPC: 656942453734


Manufacturer: Samsung


Battery Capacity: 247 Milliamp Hours


Battery Cell Type: Lithium Ion


Battery Charge Time: 30 minutes


Battery Power: 247 Milliamp Hours


Screen Size: 40 Millimeters


Display Type: AMOLED


Resolution: 396 x 396


Compatible Devices: Smartphone


Compatible Phone Models: Various Android models


Memory Storage Capacity: 16 GB


RAM Memory Installed: 1.5 GB


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, May 30

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

    • Its a good tracker.!
Certainly, let's break down how the Samsung Galaxy Watch 4's app works, along with its tracking capabilities, ease of use, and overall quality: **1. App Functionality:** The Samsung Galaxy Watch 4 pairs with the Samsung Health app, which is available for both Android and iOS devices. The app acts as a central hub for all your health and fitness data. It's user-friendly and provides a clear overview of your activity, sleep, and heart rate data. You can also set fitness goals, track your progress, and view trends over time. However, for iPhone users, some features may be limited compared to Android users due to the ecosystem differences. **2. Tracking Capabilities:** - *Health Tracking:* The ECG monitor, heart rate sensor, and blood pressure monitoring are key health tracking features. They provide valuable data for monitoring your cardiovascular health. - *Fitness Tracking:* It offers various exercise modes, including running and outdoor activities, thanks to GPS. The watch can track your steps, calories burned, and distance accurately. - *Sleep Tracking:* The sleep tracking feature is comprehensive, providing insights into your sleep cycles and overall sleep quality. - *Fall Detection:* This is an added safety feature that can detect falls and send alerts if needed, which is especially useful for older users. **3. Ease of Use:** - *User-Friendly:* The Samsung Galaxy Watch 4 is easy to navigate with its touchscreen interface and customizable watch faces. It also supports voice commands for convenience. - *Quick Access to Data:* You can access your health and fitness data with a few taps on the watch, and the app presents this data in a clear and organized manner. - *LTE Connectivity (if applicable):* If you have the LTE version, it's easy to stay connected without your smartphone, which adds to the convenience. **4. Overall Quality:** - *Build and Design:* The watch has a stylish and comfortable design, especially the 40mm version, making it suitable for everyday wear. - *Performance:* It's responsive and performs well for most tasks and tracking activities. - *Battery Life:* Battery life is decent, considering the features, but it might require daily charging, depending on your usage. In summary, the Samsung Galaxy Watch 4, when paired with the Samsung Health app, offers solid tracking capabilities, ease of use, and good overall quality. However, the overall experience may vary depending on your smartphone's operating system, so it's essential to consider your device compatibility when making a decision. ... show more
Reviewed in the United States on September 28, 2023 by Larry Stinson
    • Great watch!
I've had this watch for close to a year now and it works great. Synchs perfectly with my Samsung Galaxy and does everything you would want it to. I bought it used and it's great quality. My only gripe would be the wristband, it works well but all the paint rubbed off of the metal pieces. Also, you'll have to charge it every 24 hours which is a bit of a pain. ... show more
Reviewed in the United States on December 3, 2023 by Doug S
    • Battery life too short for golfing
I tried to like this watch more, but couldn't get a full round of golf in using the built in GPS and cell service. Around hole 13 it would die. So I returned this and got a non-cellular watch 5 instead. That has plenty of staying power for a full round of golf. The cellular versions I hear eat up battery life too much. Not worth it in my case. ... show more
Reviewed in the United States on November 26, 2023 by Charley L.
    • Exactly what I needed
The battery life is shorter than I thought it would be, but otherwise it's exactly what I want and need from a smart watch.
Reviewed in the United States on December 7, 2023 by Kelly Anderson
    • Perfect Condition
Review Image by Sarah Sarah
I am obsessed with my watch. I've had it for about 2 months now. Wear it every day, all day, and the battery lasts. I was hesitant to purchase "renewed" but the watch arrived in PERFECT condition, packaged nicely, and days earlier than expected. This is my first smart watch so I don't have anything to compare to but this does everything I need (mostly wanted to track my walking.) The watch band is a bit thick for my liking so I did order slim watch bands - super easy to change them out. The only complaint I have was figuring out what apps sync with Samsung health and/or each other. I was using Google Fit to start but had a hard time getting everything all in one place. I use Lose It to to track my calories but can't sync that with my app unless I pay premium. So little things I'm figuring out still. ... show more
Reviewed in the United States on September 22, 2023 by Sarah Sarah
    • Watch with scratches
Review Image by Paramita Paramita
The watch has several scratches on the dial that you may see in the picture. The description of the product is confusing. It says Renewed in bold that gives an impression that the product had a defect that has been fixed. Then it says pre-owned. It also says - "- This pre-owned product has been professionally inspected, tested and cleaned by Amazon qualified vendors. - This product is in "Excellent condition". The screen and body show no signs of cosmetic damage visible from 12 inches away." Usually I do not give any bad review of the product. But, I am sorry to say that I did not receive a clean product in "Excellent condition", it has so many visible cosmetic damages. The description is totally false. Moreover, I had to pay the shipping to send it back to the seller. Not sure if I will get that reimbursed by Amazon or not. And then the Amazon CSR was asking me why am I returning the product. Who would buy a gift with multiple scratches on it? This isn't a good customer experience. I would strongly suggest Amazon not to do any business with this seller. Wish I could have given zero rating for this product. ... show more
Reviewed in the United States on May 12, 2023 by Paramita Paramita
    • A must have pda-timepiece-phone device on your wrist!
Review Image by Amazon Customer Amazon Customer
Review Image by Amazon Customer Amazon Customer
The Samsung Galaxy Watch has got to be the best purchase I've ever made thru Amazon. Hands down(drop the mic). I'm really blown away with the quality/workmanship of the SGW and how well its integrated itself into my life by improving several crucial aspects. Starting with sleep tracking, water and calorie intake feedback, I've developed some healthy routines that are easy to maintain. Having the weather forecast at a flick of the wrist as well as e-mail notifications keeps me ahead of the game. I've got exercise routines with coaches right here on my arm; no fumbling around with the phone. Oh yeah, synced up with my Samsung A51 is effortless and consistent. Top it off with how slender the watch body is with its unique wrist band and crisp brilliant display I don't know how this device could be improved. Very pleased and happy I've bought something that truly lives up to its hype! Pic: 1st row Samsung Galaxy, Zeblaze Thor Pro 4, Casio G-Shock, Apple clone and Skagen dress watch. ... show more
Reviewed in the United States on February 2, 2023 by Amazon Customer Amazon Customer

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