44 mm
Color: Black
The Samsung Galaxy Watch 4 feels familiar, yet different, and I mean that in the best way possible. It looks like a Galaxy Watch, but this iteration is sharper and more sophisticated. The Galaxy Watch 4 packs a 3-in-1 health sensor for measuring heart rate, taking ECGs and reading body composition — it's the first major smartwatch to offer bioelectrical impedance analysis (BIA).
There's no question the Galaxy Watch 4 is the best smartwatch yet for people with Samsung smartphones.
The Samsung Galaxy Watch 4 feature a redesigned frame that allows for gapless transition from the smartwatch chassis to the straps. The uniform set of crown buttons also sport an oblong shape, rather than one protruding round crown accompanied by a flush side button.
The Samsung Galaxy Watch 4’s software provides the best experience I’ve ever had using Wear OS, period. Although smartwatches with the old Wear OS have fooled me before — working fine at first until glitches start oozing out — the Galaxy Watch 4 doesn't falter.
Samsung developed a new health sensor for the Galaxy Watch 4. It combines heart rate monitoring (PPG), an electrocardiogram reader (ECG) and bioelectric impedance analysis (BIA) for a 3-in-1 sensor that sits closer to the skin than the individual health sensors in the previous Galaxy Watch.Of those, BIA is the big news. Similar to what you’ll find on the best smart scales, BIA sends a weak electric current through your body to analyze body fat percentage, body mass index (BMI), muscle mass, bone mass, body water percentage and more. Taking a BIA reading is quick, but you’ll need to hold your fingers against the crown buttons for about 15 seconds without those fingers resting on the skin next to your smartwatch.
Samsung improved sleep tracking metrics for its latest smartwatch. Blood oxygen is measured once a minute overnight on the Galaxy Watch 4, compared to once every 30 minutes on the Galaxy Watch 3. More SpO2 readings could mean more insight on rest quality, especially for those with conditions like sleep apnea. When you sleep next to a compatible smartphone, the sounds of your snores get tracked, too.