The Series 4 now has several new health-focused features, which are very intriguing, including the ability to detect when you fall and even alert emergency contacts if need be, as well as an electrical heart rate sensor that works with an app to alert you to heart health issues. The electrocardiogram (ECG) app has been certified by the Food & Drug Administration, but it's not out yet.
1.2" (30.4mm) Diameter Display Size/ 15 Preloaded GPS And Indoor Sports Apps/ VO2 Max And Fitness Age Estimates/ Smart Notifications, Automatic Uploads To Garmin Connect, LiveTrack And More/ Up To 7 Days In SmartWatch Mode; 13 Hours In GPS Mode Battery Life/ Corning Gorilla Glass 3 Lens Material/ Stainless Steel Bezel Material/ Fiber-Reinforced Polymer And Stainless Steel Case Material/ Silicone Strap/ Touchscreen/ Swim/5 ATM/ Black with Slate Hardware Finish
Samsung treads between smartwatch and fitness tracker, also packing in a heart rate sensor along with that GPS and its much-improved Samsung Health software. There's also the option of LTE (coming soon), if you wish for an untethered connection, with a standalone speaker for taking calls on the watch. It's now waterproof, too, adding swim tracking skills that are on par with the Watch Series 4.
We test every new smartwatch to gauge its design and comfort. If it’s not stylish and comfortable enough to get you from an early morning workout to the office to a night out, you probably won’t wear it every day. Most smartwatches are also fitness trackers, so we put all of its sensors to the test, from step counts to heart rate to GPS (when applicable).