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Garmin Venu 3S smartwatch discounted to $299 on Amazon

Amazon has cut the price of Garmin's Venu 3S smartwatch to $299, down from its $449.99 list price, a $150 reduction. The compact 41mm watch features an AMOLED display, built-in GPS, 5 ATM water resistance, and up to 10 days of battery life in smartwatch mode.

Google details hardware differences between Fitbit Edge and Fitbit Air

Google has outlined how its new Fitbit Edge and Fitbit Air trackers differ beyond screen size. The screenless Air relies on the Google Health app for interaction, while the Edge adds a 1.34-inch AMOLED touchscreen, a side button, ECG support, an altimeter and an ambient light sensor. Both devices are rated for seven days of battery life and carry IP68 and 5ATM water/dust resistance.

Case study highlights clinician data overload from smartwatch ECG monitoring

A 2020 case report described a 70-year-old atrial fibrillation patient who checked her smartwatch's ECG readings 916 times in a year and brought hundreds of printed readouts to a single appointment with her electrophysiologist. Researcher Lindsey Rosman, who co-authored the paper, cites the case as an example of how wearable health devices are generating volumes of data that patients and clinicians struggle to process.

CNET reporter's Apple Watch ECG test flags real heart irregularity during hospital comparison

A CNET journalist testing the Apple Watch Series 4's ECG feature against a hospital-grade electrocardiogram unexpectedly had the device flag an irregular heartbeat in his own heart, matching the hospital's findings. Doctors later determined the anomaly was benign, likely caused by stress and sleep deprivation, but the moment shifted his view of the watch from a novelty gadget to a legitimate health tool. He later gave Apple Watches to his parents, and one flagged an issue that led to his father's diagnosis and treatment for a serious heart condition.

YouTuber's tests show Apple Watch Series 12 heart sensor rivals chest straps

The Quantified Scientist's Rob ter Horst compared the Apple Watch Series 12's redesigned heart rate sensor against a Polar H10 chest strap across cycling, running, and weightlifting. He found near-perfect correlation during cycling, strong results while running, and solid but slightly weaker accuracy during weightlifting, an exercise notoriously difficult for wrist sensors to track.

Apple Watch Series 12 adds Readiness Score and upgraded health sensors

Apple's Series 12 smartwatch introduces a single-tap hand gesture for navigating Smart Stack widgets alongside existing double-tap and wrist-flick controls. It also debuts a new Health Sensing System with 32 ECG electrodes, ring-arranged photodiodes, and larger LEDs, enabling heart rate readings every five seconds and HRV readings every five minutes, up from every five minutes and two hours respectively on Series 11. The new S11 chip also improves step-tracking accuracy and adds a real-time Steps complication to the watch face.

Apple Watch Ultra 4 Adds 32-Electrode Sensor Array and Real-Time Readiness Score

Apple's new $799 Watch Ultra 4 pairs a redesigned sensor array—32 electrodes arranged like flower petals—with the new S11 chip, enabling heart-rate readings every 5 seconds and HRV checks every 5 minutes, far more frequent than prior models. That increased sampling powers a new Readiness score that updates throughout the day rather than relying mainly on overnight data, plus a Daytime toggle in the Vitals app to view daytime alongside nighttime metrics.

Circular Adds NFC Payments and Haptics to New Ring 3 Pro and Slim Smart Rings

At IFA in Berlin, Paris-based Circular unveiled the Ring 3 Pro and Ring 3 Slim, adding contactless payment support and the return of haptic vibration alerts to its smart ring lineup. The rings retain Circular's FDA-cleared ECG and AFib detection while adding new wellness features like blood pressure trends, glucose trend estimates and expanded sleep metrics.