Samsung Watch

Optimize your workouts with a Daily Readiness Score that reveals if you’re ready to exercise or should focus on recover (requires Fitbit Premium membership. Premium content recommendations are not available in all locales and may be in English only)
EDA Scan app detects electrodermal activity which may indicate your body’s response to stress and a built-in skin temperature sensor logs yours each night so you can see when it varies
With a compatible ECG app right on your wrist, assess your heart for atrial fibrillation–a heart rhythm irregularity–and share the results with your doctor (Only available in select countries. Not intended for use by people under 22 years old)

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STYLE YOU CAN COUNT ON: Galaxy Watch3 combines style—two sizes, two finishes, three colors and, 50,000 plus watch faces-with military-grade durability and water resistance
LEAVE YOUR PHONE BEHIND: Leave your phone at home. Galaxy Watch3 gives you the freedom to call, text, stream music and get notifications via LTE connectivity

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Do More Right From Your Wrist: Galaxy Watch4 works as an extension of your phone so you can talk, stream, and text from your wrist on the go
Google on Your Wrist: Tap into the power and convenience of select Google services and apps; Pay for coffee, get directions to the park, use Google Assistant or Bixby, and stream from YouTube Music