Samsung

Samsung SM-R860NZKAXAA Galaxy Watch 4 40mm Black

4.6 (29351 reviews)

Elevate Your Wellness with the Samsung Galaxy Watch 4 The Samsung Galaxy Watch 4 is the ultimate smartwatch for health and fitness tracking. Monitor your body composition, track your sleep, and take care of your heart with ECG monitoring. Its advanced workout tracking recognizes various activitie...

$229.99*
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

Elevate Your Wellness with the Samsung Galaxy Watch 4

The Samsung Galaxy Watch 4 is the ultimate smartwatch for health and fitness tracking. Monitor your body composition, track your sleep, and take care of your heart with ECG monitoring. Its advanced workout tracking recognizes various activities automatically. Stay connected with calls, texts, and notifications right on your wrist. With Google integration and a stylish design, the Galaxy Watch 4 is your perfect companion for a healthier, connected lifestyle.

Specifications:

  • Display Size: 40mm
  • Connectivity: Bluetooth, GPS, LTE
  • Health Features: ECG Monitor, Sleep Monitor, Body Composition Analysis
  • Activity Tracking: Auto Workout Tracking
  • Operating System: Android
  • Storage: 16GB

Key Features

BODY COMPOSITION ANALYSIS: Galaxy Watch4 is the first smartwatch to off body composition data right on your wrist, On your own schedule, now you can get readings on body fat, skeletal muscle, body water, basal metabolic rate, and Body Mass Index.Supported Application:Heart Rate Monitor,Sleep Monitor,Fitness Tracker. Connectivity technology:LTE,Bluetooth,GPS. Wireless comm standard:Bluetooth

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

GO THE EXTRA MILE: Improve your runs with advanced running coaching technology; VO2 Max readings assess your oxygen levels to manage and track your heart and lung endurance

EXTENSION OF YOUR PHONE: Put the phone features you need right on your wrist and stay connected to calls, texts, notifications, and music streaming, all accessible with a simple tap

GOOGLE ON YOUR WRIST: Tap into the power and convenience of select Google services and apps right from your wrist; Pay for coffee; Get directions to the park; Use Bixby or Google Assistant for help on almost any topic; Stream your favorite tunes on YouTube

Specifications

Model
Galaxy Watch 4
Size
40mm
Color
Black
Body Composition Analysis
Body fat, skeletal muscle, body water, basal metabolic rate, BMI
Sleep Tracking
Advanced, with SpO2 monitoring
Heart Rate Monitor
Yes
ECG Monitoring
Yes
Workout Tracking
Advanced, recognizes 6 activities automatically
Running Coaching
Advanced, with VO2 Max readings
Connectivity Technology
LTE, Bluetooth, GPS
Wireless Communication Standard
Bluetooth
Voice Assistants
Bixby, Google Assistant

Pros & Cons

👍 Pros

  • Provides the first-ever smartwatch body composition analysis directly from the wrist, offering readings on body fat, skeletal muscle, body water, BMR, and BMI
  • Features advanced sleep tracking that continuously monitors sleep patterns and SpO2 levels, helping users wake up feeling refreshed
  • Enables accurate ECG monitoring and can detect possible atrial fibrillation, allowing users to share personalized readings with their doctor via the Samsung Health Monitor app
  • Offers advanced workout tracking that automatically recognizes 6 popular activities, including running, rowing, and swimming, within just 3 minutes
  • Enhances running performance with advanced coaching technology and VO2 Max readings to assess oxygen levels, supporting heart and lung endurance
  • Functions as an extension of your phone, keeping you connected to calls, texts, notifications, and music streaming directly from your wrist
  • Integrates Google services and apps on your wrist, facilitating payments, directions, voice assistance via Bixby or Google Assistant, and YouTube music streaming

👎 Cons

  • Body composition analysis is a health metric and not a medical diagnosis; users should consult a healthcare professional for health insights
  • The full range of health features, like ECG monitoring, requires a compatible Galaxy phone and the Samsung Health Monitor app for sharing data with a doctor
  • While recognizing 6 activities automatically, it may require manual input for a broader range of specialized workouts or precise tracking customization
  • VO2 Max readings and advanced running coaching are specific to running, and similar in-depth coaching may not be available for all recognized activities
  • Battery life details are not provided, which is a crucial factor for a device with extensive health tracking and smart features
  • Requires a smartphone connection for full access to calls, texts, notifications, and music streaming capabilities

Frequently Asked Questions

The Galaxy Watch4 is the first smartwatch to provide body composition data directly on your wrist, including readings for body fat, skeletal muscle, body water, basal metabolic rate, and Body Mass Index.
The Galaxy Watch4 sleep tracker continuously monitors your sleep patterns and SpO2 levels when you go to bed, helping you wake up feeling refreshed.
The watch allows for accurate ECG monitoring to help you keep an eye on possible atrial fibrillation, and personalized readings can be shared with your doctor via the Samsung Health Monitor app on a compatible Galaxy phone.
The Galaxy Watch4 offers advanced workout tracking that automatically recognizes six popular activities, such as running, rowing, and swimming, in just three minutes, and also supports live coaching sessions and Group Challenges.
The watch improves runs with advanced running coaching technology and assesses oxygen levels through VO2 Max readings to help manage and track heart and lung endurance.
The Galaxy Watch4 acts as an extension of your phone, allowing you to access calls, texts, notifications, and music streaming directly from your wrist.
The watch enables access to select Google services and apps from your wrist, including paying for coffee, getting directions, using Bixby or Google Assistant, and streaming music on YouTube.