SAMSUNG Galaxy Watch 4 - 40mm LTE - Silver - SM-R865UZSAXAA
SAMSUNG Galaxy Watch 4 - 40mm LTE - Silver - SM-R865UZSAXAA
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SAMSUNG Galaxy Watch 4 - 40mm LTE - Silver - SM-R865UZSAXAA

About this item

  • Better sleep starts here
    Manage your overall sleep quality for a great night's sleep with an advanced tracker that calculates your sleep score.1,2,3
  • Be smart about your heart
    Be smart about your heart with ECG Monitoring that gives accurate readings.4,5,6
  • Make every workout count
    Make the most of every workout with Auto Workout Tracking. Stay motivated by connecting to live coaching sessions via your smartphone or to dynamic Group Challenges with your friends.7
  • Go the extra mile
    Make the most out of every mile with Advanced Run Coaching and VO2 max readings to assess your cardio levels.8,9
  • The power of Google right on your wrist10
    Tap into the power and convenience of select Google services and apps on your wrist.11
  • Phone-free, but always connected
    With LTE Connectivity, you're always connected on your Galaxy Watch4 — call, text, stream music and receive notifications just like you would with Wi-Fi.12
  • Timeless design. Elevated style.
    Show off your style with a luxurious and timeless watch design that's great for any occasion. Personalize your look even more with a range of stylish watch faces and bands.13


1 The SpO2 measurement software is not intended for use in the diagnosis of disease or other conditions, or in the cure, mitigation, treatment or prevention of disease.
2 The snoring measurement requires smartphone with Android 6.0 or later, 15GB of RAM, phone within 2 feet of user, with snore detection enabled through Samsung Health app version 6.18 or higher.
3 Requires Samsung Health app version 6.18 to view history.
4 For clinical trial results concerning the accuracy of the ECG monitor, visit .
5 The ECG Monitor app is not intended to replace traditional methods of diagnosis or treatment and is for information purposes only. The ECG Monitor app is not intended for users with known arrhythmias other than atrial fibrillation or users under 22 years old. Users should not interpret or take clinical action based on the device without consultation of a qualified healthcare professional.
6 Requires Samsung Galaxy Smartphone with Android 7 or later and Samsung Health Monitor app (available only at the Samsung Galaxy app store).
7 Water-resistant up to 50 meters per ISO standard 22810:2010. Not intended for scuba diving. Avoid excessive, sudden temperature changes and high-velocity activities. Rinse in fresh water / dry after use in seawater or chlorinated water.
8 Accurate VO2 max reading requires running outdoors for at least 20 minutes with GPS on; consult user manual before use.
9 The VO2 max software functions are not intended for use in the diagnosis of disease or other conditions, or in the cure, mitigation, treatment or prevention of disease.
10 Google is a trademark of Google LLC.
11 Google, Google Assistant, and YouTube Music are trademarks of Google LLC.
12 4G LTE stand-alone connectivity only available on Samsung Galaxy Watch4 LTE / Galaxy Watch4 LTE versions. Stand-alone voice calling and stand-alone text messaging on LTE versions require initial pairing with an eligible Android 6.0 or later smartphone device and separate qualifying wireless plan. Your carrier may not support stand-alone voice calling, or support may be available only in certain areas. Please check with your carrier for more information. Stand-alone functionality limited if paired phone is not powered on or connected to a wireless network.
13 Select interchangeable watch bands sold separately.

At a glance

Battery life
40 hours
Compatible OS
Android
Internal memory
16 GB
Resists water
Y
Screen size
40 mm
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Prices may vary online, in stores, and in-app.

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Not available