Samsung Galaxy Watch 3 45MM Mystic Black Bluetooth SM-R840NZKAXAR

Condition: Used - signs of use on watch band. Unit looks great


1 In Stock


Condition: Used - signs of use on watch band. Unit looks great


Monitor your health, track your fitness, and match your style with the Galaxy Watch3 GPS Smartwatch from Samsung. This smartwatch features a rotating bezel that makes it easy and intuitive to navigate through available apps and manage your music on the full-color 1.4" display. Some apps let you keep track of your health as you work out and throughout the day. You can use them to monitor your heart rate (ECG), blood pressure, and VO2 Max (blood oxygen) with an SpO2 sensor.

Other apps can track your workouts and deliver detailed results of exercises, activities, and sports. Meeting your fitness goals requires that you get a good night's rest and the Watch3 can help with that too. Wear it throughout the night and use the sleep tracker to generate an overall Sleep Score. Based on this score, the Watch3 will give you recommendations on how to achieve better rest in the future. When you're full of energy and ready to exercise, the Galaxy Watch3 can play you your favorite music to get you motivated without the need of a mobile phone. Just load up your favorite tracks on its 8GB of built-in storage and pair your favorite Bluetooth headphones.

Built for the Outdoors

If you want to break out of the gym or your living room and experience the great outdoors, the Galaxy Watch3 can withstand the elements and keep you on the right path. It achieved the MIL-STD-810G rating for shock, temperature, dust, and high altitude resistance, and is IP68 rated with up to 164' (5 ATM) of water resistance. When outside, built-in GPS tracking records your route and helps you get back from a hike or jog.

Multi-Day Battery

The built-in battery has enough power for up to 56 hours. You can recharge it via the included wireless USB charging pad, or if you own a Galaxy phone with PowerShare, you can get power directly from your smartphone.

Stress Level Monitoring

The Galaxy Watch3 can detect your stress level and provide you with calming breathing guides to help you relax.

Work Out at Home

The Galaxy Watch3 can be paired with various Samsung smart TVs, where you can work out to over 120 fitness programs and follow onscreen video demonstrations. Simple choose a workout and cast it to your TV. As you go, the Watch3 will track your progress automatically and your TV will display your heart rate in real time.

Trip Detection

For added peace of mind, the Watch3's Trip Detection feature can detect if you've fallen, notify an emergency contact, and share your location if needed.

Match Your Style

Over 50,000 watch faces are available for the Watch3 or you can make your own with over 40 different combinations. Create watch faces that look good and still provide you with essential information at a glance. You can even match your watch face to your outfit with the My Style feature. You simply take a picture of what you're wearing with your phone, send it to the watch, and it will generate multiple faces in different patterns, and with a color scheme that matches.

Auto Chat History

When receiving a new text, the Watch3 can link it with others so you can more easily follow the conversation. It will even show images in-line with text on the screen.

Smart Reply

There's no need to stop what you're doing to send a quick response to a message with Smart Reply. Smart Reply analyzes your text and photos that you receive and will give you a variety of suggested responses, all you have to do is select the one you like best. It provides replies to match a variety of categories, such as food, celebrations, selfies, and more.


Bitmoji stickers make replying to friends and family more fun and creative. You can even personalize your Bitmoji to look just like you.


If you own a Galaxy Note 20, you can play Spotify on your phone and then continue the music via the Watch3's Spotify app.

Connect to Your Phone

A variety of Galaxy apps let you connect your Watch3 with your smartphone for additional functionality. Use your Galaxy smartwatch to find your phone, view your phone's photos, control music playback, and check reminders.

Additional Features

Protective Gorilla Glass DX
2.5D curved front glass and 3D back glass
Support for Bluetooth 5.0, Wi-Fi 4 (802.11n), and NFC wireless connectivity
Connect to other Samsung devices with the Galaxy Wearables app
Use the SmartThings app and remotely control smart devices with the Watch3
Premium leather strap with buckle closure
The strap is replaceable and can be swapped out for a new look

Samsung Watch 3 Specs

Watch Operating System Proprietary OS
Chipset 1.15 GHz Samsung Exynos 9110
Storage Capacity 8 GB
Sensors Accelerometer, Barometer, Gyroscope, Heart Rate, Light Sensor
Activity Tracker Yes
Microphone Yes
Built-In Speaker Yes
Connectivity Bluetooth, Wi-Fi, NFC
Bluetooth Protocol Bluetooth
Bluetooth 5.0
GSM 2G Yes
GSM 3G/3.5G Yes
Wi-Fi Standard Wi-Fi 4 (802.11n)
Dial Shape Round
Display Size 1.4" / 3.6 cm
Dial Type Digital
Display Technology OLED
Display Resolution 360 x 360
Pixel Density 364 ppi
Battery Capacity 340 mAh
Battery Life Normal Use: Up to 56 hours
Charging Method Wireless Charging
Watch Crystal Material Corning Gorilla Glass DX
Case Materials Stainless Steel
IP Rating IP68
Water Rating 5 ATM
Band Material Leather
Band Width 22 mm
Case Dimensions 1.77 x 0.44 x 1.82" / 45 x 11.1 x 46.2 mm
Weight 1.9 oz / 53 g (Watch and Band)
Packaging Info
Package Weight 0.47 lb
Box Dimensions (LxWxH) 11.4 x 2.6 x 1.3"