Key Features
Up to 40 Hours of Battery Life
Bluetooth & Wi-Fi Connectivity
Sensors Measure ECG, SpO2 & BIA
Sleep Monitoring
Challenge Friends/Family to Stay Fit
Automatic Workout Tracking
Supports over 90 Exercises
1.19″ Super AMOLED
Sweat-Resistant Construction
Durable Armor Aluminum Construction
Samsung Watch4 40mm Overview
Making a better connection with yourself can help you live your best life, and the Samsung Galaxy Watch4 Smartwatch makes it easier than ever to do both. The updated strap design of the Watch4 brings Samsung’s BioActive Sensors closer to your wrist, helping to provide even more accurate readings when using the Watch4 to monitor your health and wellness. Using sensors built into the back of the watch and its two side buttons, the Watch4 can measure your ECG, BIA, and blood oxygen. These can be useful tools during your day, as you work out, and even when you sleep.
In addition to your health and wellness, the Watch4 smartwatch helps you connect with others, remain informed, and stay entertained. Thanks to Wear OS powered by Samsung, the best aspects of Tizen and Wear OS come together to give you seamless connectivity to Android smartphones and access to a huge library of apps that cover health, fitness, music streaming, and more. As you use the Watch4, you can make it fit your personal style with a swappable watch band, AR Emojis, different color backgrounds, and fonts. Over 40 watch faces are available out of the box, with more downloadable online.
Body Composition
You can check your BIA (Bioelectrical Impedance Analysis) score anytime by touching two fingers to the side buttons. Built-in sensors there work with those touching your wrist to take 2400 readings in 15 seconds, giving you measurements of your body’s fat, muscle, and water mass. Samsung worked to ensure that these sensors are 98% accurate when compared to standard DXA scans.
Heart Smart
The integrated ECG sensors can measure your heart rate in real time, keeping you informed on any detected abnormal readings. All of the data can be sent straight to a compatible smartphone for sharing with others.
Do You Snore?
By measuring your blood oxygen (SpO2) every second, the Watch4 can track your breathing and snoring throughout the night, giving you a sleep score in the morning. This data can help you adjust your environment and sleeping habits so you can get a more restful night’s sleep.
Stay Motivated with Challenges
We all know it’s important to get our exercise in every day, but staying consistently motivated on our own can be difficult. Samsung incorporates Challenges into the Watch4 to not only help yourself, but to also help those you care about. The feature lets you compete with friends and family to see who can come out on top by tracking your steps through a live message board. A point system is used to determine who wins commemorate badges and you’ll get updates on where you rank and who pulled ahead, prompting you to get up and take the lead.
Bluetooth & Wi-Fi
With support for Bluetooth 5.0 and dual-band Wi-Fi 4 (802.11n), you can wirelessly connect with your smartphone and optional headphones to stream music and share fitness data.
One UI
Use the touchscreen and two side buttons to quickly navigate through apps and menus. You can also use gestures to answer smartphone calls and dismiss alerts.
Delivery & Returns
Returns & Refund Policy 
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