

Samsung Galaxy Watch 4 - 44mm BT - Black- SM-R870NZKAXAA
Key item features
- Health Monitoring: The Galaxy Watch4 provides comprehensive assessment of physical fitness and wellness management parameters, including real-time ECG measurements to monitor abnormal heart rate and rhythm.
- Fitness Companion: Track steps and engage in friendly competition with friends and family through a live message board, complete with commemorative badges and a point system for motivation.
- Sleek Design: Featuring a streamlined Armor Aluminum metal frame, the watch offers high-end looks and functionality, with a selection of comfortable, sweat-resistant bands like the Hybrid Leather Band and Sport Band.
- Customizable Display: Personalize your watch face with analog or digital options, various backgrounds, fonts, and colors, and express your style with AR Emojis and animated graphics.
- Wear OS Integration: As the first smartwatch with Wear OS Powered by Samsung, it offers seamless access to a rich selection of favorite apps, including music streaming and health and fitness applications.
Specs
- Battery life40 hours
- Compatible OSWear OS
- Mobile OSAndroid Wear
- Resists waterY
- Screen size44 mm
- Internal memory16 GB
Reviews summary
- : Enables direct watch-based call making and receiving.
- : Tracks various exercises including walking, running, and more.
- : Offers a wide range of useful features.
- : Tracks heart rate with reliable accuracy.
- : Provides detailed exercise and activity tracking.
- : Requires daily charging due to limited capacity.
How do you want your item?
About this item
Product details
Specifications
Brand
Battery life
Compatible OS
Mobile OS
Warranty
Warranty information
Warranty url
Warnings
Ingestion Hazard
State Chemical Disclosure
Similar items you might like
Based on what customers bought
Samsung Galaxy Watch4 Classic Stainless Steel Smart Watch, 46mm, Bluetooth, Black $139.99
2 optionsAvailable in additional 2 options$13999current price $139.99More options from $129.95Samsung Galaxy Watch4 Classic Stainless Steel Smart Watch, 46mm, Bluetooth, Black
47394.5 out of 5 Stars. 4739 reviewsSave withShipping, arrives in 2 daysSamsung Galaxy Watch4 40mm Bluetooth and WiFi Smart Watch, Black $179.00 Was $199.00
Now$17900current price Now $179.00, Was $199.00$199.00Options from $179.00 – $189.99Samsung Galaxy Watch4 40mm Bluetooth and WiFi Smart Watch, Black
47994.2 out of 5 Stars. 4799 reviewsSave withShipping, arrives in 2 daysOpen Box Samsung Galaxy Watch4 Classic Edition 46mm Smartwatch with Heart Rate Monitor $109.99
$10999current price $109.99Open Box Samsung Galaxy Watch4 Classic Edition 46mm Smartwatch with Heart Rate Monitor
Save withShipping, arrives in 2 daysPre-Owned Samsung Galaxy Watch 4 Aluminum Smartwatch 44MM Bluetooth Black - SM-R870NZKAXAA (Good) $56.99
$5699current price $56.99Pre-Owned Samsung Galaxy Watch 4 Aluminum Smartwatch 44MM Bluetooth Black - SM-R870NZKAXAA (Good)
314.5 out of 5 Stars. 31 reviewsShipping, arrives in 3+ daysSamsung Galaxy Watch FE 40mm Smart Watch, Cellular, Silver $163.20
$16320current price $163.20Samsung Galaxy Watch FE 40mm Smart Watch, Cellular, Silver
5894.5 out of 5 Stars. 589 reviewsSave withShipping, arrives in 2 daysOpen Box SAMSUNG Galaxy Watch 4 Classic (Silver) 46mm BT R890 Smartwatch $59.99
$5999current price $59.99Open Box SAMSUNG Galaxy Watch 4 Classic (Silver) 46mm BT R890 Smartwatch
74.1 out of 5 Stars. 7 reviewsShipping, arrives in 3+ daysSamsung Galaxy Watch4 Classic Stainless Steel Smart Watch, 42mm, Bluetooth, Silver $259.00
$25900current price $259.00Samsung Galaxy Watch4 Classic Stainless Steel Smart Watch, 42mm, Bluetooth, Silver
24544.4 out of 5 Stars. 2454 reviewsShipping, arrives in 3+ daysApple Watch Series 8 41mm 4G Silver with White Sport Band a Grade $226.00
$22600current price $226.00Apple Watch Series 8 41mm 4G Silver with White Sport Band a Grade
423.8 out of 5 Stars. 42 reviewsShipping, arrives in 3+ daysRestored Samsung SM-R870NZKAXAA Galaxy Watch4 Aluminum Smartwatch 44mm BT, Black (Refurbished) $56.99 Was $69.97
Now$5699current price Now $56.99, Was $69.97$69.97Restored Samsung SM-R870NZKAXAA Galaxy Watch4 Aluminum Smartwatch 44mm BT, Black (Refurbished)
84.5 out of 5 Stars. 8 reviewsShipping, arrives in 3+ daysRestored Samsung Galaxy Watch8 Aluminum Smartwatch 40mm BT Silver 2025 SM-L320NZSCXAA $189.99
$18999current price $189.99Restored Samsung Galaxy Watch8 Aluminum Smartwatch 40mm BT Silver 2025 SM-L320NZSCXAA
Shipping, arrives in 3+ daysSAMSUNG Galaxy Watch 7 SM-L310N (44mm) Wi-Fi Version, AI-ready, Bluetooth Wellness Tips, Heart Rate Tracking, Sleep Monitor, Fitness Tracker, Latin Specs (Green, 44 mm) $188.00 Was $245.58
2 optionsAvailable in additional 2 optionsNow$18800current price Now $188.00, Was $245.58$245.58SAMSUNG Galaxy Watch 7 SM-L310N (44mm) Wi-Fi Version, AI-ready, Bluetooth Wellness Tips, Heart Rate Tracking, Sleep Monitor, Fitness Tracker, Latin Specs (Green, 44 mm)
1114.3 out of 5 Stars. 111 reviewsShipping, arrives in 3+ daysSAMSUNG Galaxy Watch 3 41mm Mystic Bronze BT - SM-R850NZDAXAR $169.00 Was $319.99
2 optionsAvailable in additional 2 optionsNow$16900current price Now $169.00, Was $319.99$319.99SAMSUNG Galaxy Watch 3 41mm Mystic Bronze BT - SM-R850NZDAXAR
4964.3 out of 5 Stars. 496 reviewsSave withShipping, arrives in 2 daysRestored Samsung Galaxy Watch 4 Aluminum Smartwatch 40MM (LTE) Unlocked Black SM-R865UZKAXAA (Refurbished) $79.97
$7997current price $79.97Restored Samsung Galaxy Watch 4 Aluminum Smartwatch 40MM (LTE) Unlocked Black SM-R865UZKAXAA (Refurbished)
63.7 out of 5 Stars. 6 reviewsShipping, arrives in 3+ days
Popular items in this category
Best selling items that customers love
Rollback Samsung Galaxy Watch FE 40mm Bluetooth and Wifi Smart Watch, Black $119.00 Was $199.99
SponsoredNow$11900current price Now $119.00, Was $199.99$199.99Samsung Galaxy Watch FE 40mm Bluetooth and Wifi Smart Watch, Black
15984.4 out of 5 Stars. 1598 reviewsSave withShipping, arrives tomorrowSamsung Galaxy Watch 3 45mm Titanium BT - Mystic Black - SM-R840NTKAXAR $199.98
$19998current price $199.98Samsung Galaxy Watch 3 45mm Titanium BT - Mystic Black - SM-R840NTKAXAR
1654.4 out of 5 Stars. 165 reviewsShipping, arrives in 3+ daysSAMSUNG Galaxy Watch 3 Stainless LTE Smart Watch (45mm) $219.96
2 optionsAvailable in additional 2 options$21996current price $219.96SAMSUNG Galaxy Watch 3 Stainless LTE Smart Watch (45mm)
3444.2 out of 5 Stars. 344 reviewsShipping, arrives in 3+ daysSAMSUNG Galaxy Watch 3 45mm Mystic Black BT - SM-R840NZKAXAR $249.97 Was $429.00
2 optionsAvailable in additional 2 optionsNow$24997current price Now $249.97, Was $429.00$429.00SAMSUNG Galaxy Watch 3 45mm Mystic Black BT - SM-R840NZKAXAR
7464.5 out of 5 Stars. 746 reviewsShipping, arrives in 3+ daysSamsung Galaxy Watch5 Pro $170.40
$17040current price $170.40Samsung Galaxy Watch5 Pro
514.7 out of 5 Stars. 51 reviewsShipping, arrives in 3+ daysSamsung Milanese Band for Galaxy Watch6 (44mm) - Black $22.46
$2246current price $22.46Samsung Milanese Band for Galaxy Watch6 (44mm) - Black
61.7 out of 5 Stars. 6 reviewsShipping, arrives in 3+ daysSamsung Galaxy Watch6 Classic 47mm Bluetooth and Wifi Smart Watch, Black $249.00 Was $399.99
Now$24900current price Now $249.00, Was $399.99$399.99More options from $199.90Samsung Galaxy Watch6 Classic 47mm Bluetooth and Wifi Smart Watch, Black
39884.6 out of 5 Stars. 3988 reviewsShipping, arrives in 3+ daysSamsung One Click Sport Band for Galaxy Watch4 - Black (20mm, M/L) $24.99
$2499current price $24.99Samsung One Click Sport Band for Galaxy Watch4 - Black (20mm, M/L)
Shipping, arrives in 3+ daysSamsung Galaxy Watch Ultra PeakForm Band - ONE SIZE - Dark Gray (ET-SBL70MBE) $34.95
$3495current price $34.95Samsung Galaxy Watch Ultra PeakForm Band - ONE SIZE - Dark Gray (ET-SBL70MBE)
Shipping, arrives in 3+ daysSamsung Vzw SM-L315UZSVXAA Galaxy Watch 7 44mm Silver Accs Vzw-l315sv $309.97
$30997current price $309.97Samsung Vzw SM-L315UZSVXAA Galaxy Watch 7 44mm Silver Accs Vzw-l315sv
46594.5 out of 5 Stars. 4659 reviewsShipping, arrives in 3+ daysSamsung ET-SFR91 - Band for smart watch - Medium/Large - pink gold - for Galaxy Watch5 Pro $19.97
$1997current price $19.97Samsung ET-SFR91 - Band for smart watch - Medium/Large - pink gold - for Galaxy Watch5 Pro
93.7 out of 5 Stars. 9 reviewsShipping, arrives in 3+ daysSamsung Galaxy Watch 7 (44mm, LTE) 1.5" Health + Fitness Smartwatch L315F $179.99 Was $199.99
3 optionsAvailable in additional 3 optionsNow$17999current price Now $179.99, Was $199.99$199.99Options from $179.99 – $185.72Samsung Galaxy Watch 7 (44mm, LTE) 1.5" Health + Fitness Smartwatch L315F
2804.1 out of 5 Stars. 280 reviewsShipping, arrives in 3+ days
More items to consider
Based on what customers bought
Samsung Silicone Watch Band Strap Medium / Large, For Galaxy Watch 4 and Galaxy Watch 4 Classic, US Version $6.95
$695current price $6.95Samsung Silicone Watch Band Strap Medium / Large, For Galaxy Watch 4 and Galaxy Watch 4 Classic, US Version
94 out of 5 Stars. 9 reviewsShipping, arrives in 3+ daysSAMSUNG Galaxy Tab A7 Lite 8.7" 32GB Dark Gray (Wi-Fi), Gray $126.99 Was $159.00
Now$12699current price Now $126.99, Was $159.00$159.00SAMSUNG Galaxy Tab A7 Lite 8.7" 32GB Dark Gray (Wi-Fi), Gray
34834.4 out of 5 Stars. 3483 reviewsShipping, arrives in 3+ daysSkullcandy Jib True XT 2 True Wireless Earbud Headphones, Black $32.88
$3288current price $32.88Options from $32.88 – $36.37Skullcandy Jib True XT 2 True Wireless Earbud Headphones, Black
15204.2 out of 5 Stars. 1520 reviewsSave withPickup todayDelivery todayShipping, arrives tomorrowSkullcandy Dime XT 2 IPX4 Sweat and Water-Resistant Wireless In-Ear Earbuds, Black $28.69
$2869current price $28.69More options from $25.99Skullcandy Dime XT 2 IPX4 Sweat and Water-Resistant Wireless In-Ear Earbuds, Black
20294 out of 5 Stars. 2029 reviewsSave withShipping, arrives in 2 daysIn 100+ people's carts JLab Go Air Pop Bluetooth Earbuds, True Wireless with Charging Case $19.99 Was $29.38
Now$1999current price Now $19.99, Was $29.38$29.38More options from $18.03JLab Go Air Pop Bluetooth Earbuds, True Wireless with Charging Case
330924.5 out of 5 Stars. 33092 reviewsShipping, arrives in 3+ daysBest seller Beats Studio Buds True Wireless Bluetooth Earbuds- Black $148.99
$14899current price $148.99More options from $89.95Beats Studio Buds True Wireless Bluetooth Earbuds- Black
63464.1 out of 5 Stars. 6346 reviewsShipping, arrives in 3+ daysSamsung Galaxy Watch4 40mm Bluetooth and WiFi Smart Watch, Black $179.00 Was $199.00
Now$17900current price Now $179.00, Was $199.00$199.00Options from $179.00 – $189.99Samsung Galaxy Watch4 40mm Bluetooth and WiFi Smart Watch, Black
47994.2 out of 5 Stars. 4799 reviewsSave withShipping, arrives in 2 daysSlumberjack Grand Mesa 15" Air Mattress with Built-in Removeable Pump, Full $55.99
2 optionsAvailable in additional 2 options$5599current price $55.99Slumberjack Grand Mesa 15" Air Mattress with Built-in Removeable Pump, Full
1313.5 out of 5 Stars. 131 reviewsSave withShipping, arrives in 2 daysApple MagSafe Charger for iPhone and Airpods $37.99
$3799current price $37.99Apple MagSafe Charger for iPhone and Airpods
18344.3 out of 5 Stars. 1834 reviewsShipping, arrives in 3+ daysChefman Turbofry Touch XL 8 Qt. Air Fryer With Digital Controls - Stainless Steel $119.99
2 optionsAvailable in additional 2 options$11999current price $119.99More options from $79.99Chefman Turbofry Touch XL 8 Qt. Air Fryer With Digital Controls - Stainless Steel
14514.5 out of 5 Stars. 1451 reviewsSave withShipping, arrives in 3+ daysJLab Audio Go Air True Wireless Earbuds + Charging Case $18.49 Was $29.99
Now$1849current price Now $18.49, Was $29.99$29.99Options from $18.49 – $23.99JLab Audio Go Air True Wireless Earbuds + Charging Case
35864 out of 5 Stars. 3586 reviewsSave withShipping, arrives in 2 days
Customer ratings & reviews
Reviews summary
- : Enables direct watch-based call making and receiving.
- : Tracks various exercises including walking, running, and more.
- : Offers a wide range of useful features.
- : Tracks heart rate with reliable accuracy.
- : Provides detailed exercise and activity tracking.
- : Requires daily charging due to limited capacity.
Customer images






+545 images
Showing 1-3 of 2,127 reviews
Verified Purchase
My first smart watch and I love it.
My first smart watch and its great. I have learnt how to use it in no time at all. I use my watch for payments, time and everything else. I am not sure if the blood pressure and ECG readings are correct, but i like them. I am now addicted to this watch.
Hello, Apoo. Thank you for taking time out of your day to leave us this positive review. We appreciate you being part of the Samsung family. ^Kayla
Verified Purchase
A Very Nice and Minimalist Looking Smart-Watch!
This watch is very nice and minimalist, I like the dark color of the green, the battery life seems pretty good for a watch of this size, maybe 2 days or a little over 2 days if you don't use it as much as I do. Counts my steps, lets me looks at my heart rate and stress, and I can handwrite texts with my finger. Pretty cool, and switching out the watch faces is nice. Probably the only watch I have seen that can stand toe to toe with the Apple Watch.
Great watch at great price.
Watch is excellent and pretty accurate. Loved all the features. Only jibe will be the battery life. Getting more than a day out of it but it could be better.
Related pages
- All Premium Wearable Tech
- Amazfit Smart Watches
- Samsung Galaxy Watches
- Wearable Tech - Certified Refurbished
- Samsung Galaxy 4 Watch
- Galaxy Watch Verizon
- 3Plus Smart Watches
- Samsung Galaxy Watch Refurbished
- Galaxy Watch 2
- Smart Watch Accessories
- Galaxy Watch Active Refurbished
- Samsung Galaxy Watch Active Refurbished










































