Overview

The Withings ScanWatch 2 is built for health-conscious Canadians who refuse to give up the look of a classic timepiece for a fitness tracker. Available on Amazon.ca, it sits in a unique category: a traditional analog watch with a hidden OLED sub-dial and medical-grade sensors inside — offering FDA-cleared and CE-marked ECG monitoring, continuous heart rate, SpO2, skin temperature, and sleep tracking in a 38mm or 42mm stainless steel case with a sapphire glass crystal. It’s a strong fit for Canadians who want serious cardiovascular health monitoring without wearing something that looks like a miniature smartphone on their wrist, and who want that capability throughout long Canadian winters when outdoor activity data matters most.

The ScanWatch 2 is the successor to the original ScanWatch, and Withings upgraded nearly every sensor on board. The new model adds a TempTech 24/7 continuous skin temperature module, a 16-channel multi-wavelength PPG sensor, REM sleep stage detection, and an updated AFib detection algorithm. For Canadian buyers who want the analog-watch aesthetic in a health monitoring device, there is currently no closer competitor at any price point — Withings invented this category and continues to lead it.

Key Specifications

Withings ScanWatch 2 ECG and Heart Health Monitoring

The ECG capability is the centerpiece of the ScanWatch 2, and it is one of the few hybrid smartwatch implementations with both FDA clearance in the US and CE marking in Europe — making it suitable for sharing readings with Canadian cardiologists or general practitioners. To take a reading, you place a fingertip on the watch crown for 30 seconds; the device classifies the recording as normal sinus rhythm, AFib, or inconclusive, and generates a full PDF-exportable ECG trace. This is clinically meaningful data: Withings’ published clinical validation data shows the AFib detection algorithm performs at a level comparable to medical-grade devices, and a 2025 firmware update refined the classification algorithm further with more granular categorization.

Beyond on-demand ECG, the ScanWatch 2 monitors heart rate continuously using its 16-channel PPG sensor. Reviewers at Android Authority noted that heart-rate tracking is solid for everyday wellness — resting heart rate, overnight trends, and daily patterns are clearly presented in the Withings Health Mate app. The watch also tracks HRV during sleep, which powers the Cardio Health Score metric in the app. The SpO2 sensor measures blood oxygen saturation overnight, and the skin temperature module (TempTech 24/7) runs continuously — all three cardiovascular markers active simultaneously with no subscription required for the core data.

Sleep Tracking and Wellness Monitoring

Sleep tracking is where the ScanWatch 2 genuinely distinguishes itself. The upgraded sensor array adds REM sleep stage detection — missing from the original ScanWatch and still absent on most hybrid competitors. The watch logs total sleep duration, light sleep, deep sleep, REM time, interruptions, and a Sleep Score. According to a reviewer at Android Authority who compared the ScanWatch 2’s sleep data against an Oura Ring 3, the sleep stage readings were closely comparable, with the Withings occasionally overestimating total sleep by counting time in bed as time asleep. Overall sleep architecture — particularly REM duration and deep sleep percentage — tracked well against a dedicated ring-form sleep tracker.

For Canadians dealing with the long indoor seasons of fall and winter, the temperature sensor adds an especially useful wellness dimension: Withings uses overnight temperature data for cycle tracking and to flag potential illness events when temperature deviates from a personal baseline. Combined with SpO2 overnight monitoring that screens for potential breathing irregularities associated with sleep apnea, the ScanWatch 2 offers a comprehensive passive health monitoring suite in what looks like a dress watch — with no nightly charging needed.

Battery Life and Everyday Wearability

Withings rates the ScanWatch 2 at up to 35 days of battery life. The hybrid form factor supports that claim by keeping the OLED sub-dial dormant most of the time and relying on low-power analog hands for timekeeping. In practice, real-world battery life depends on notification volume and how frequently sensors are polled. According to Android Authority’s reviewer, the ScanWatch 2 “easily surpassed two full weeks with regular workouts, notifications, and feature use” — roughly half the marketed maximum, but still far ahead of any full-display smartwatch in the same price range. For Canadian winter users who may forget to charge frequently during busy weekday routines, a two-week buffer offers real peace of mind. Recharging takes approximately 2 hours via the USB-C magnetic dock.

As an everyday wearable, the ScanWatch 2 is light enough to sleep in — important for accurate sleep tracking. The 38mm case weighs just 34.6g without the band. The stainless steel case, sapphire crystal, and interchangeable silicone or leather bands give it the look of a sub-$500 Swiss dress watch, making it suitable for Canadian office environments, formal dinners, and weekend outdoor use alike. Smart features are deliberately minimal: incoming call alerts and app notifications only — which will frustrate smartwatch converts but please those who want health data without constant screen interactions.

Activity Tracking and App Experience

The ScanWatch 2 automatically detects over 40 sport modes and tracks steps, distance, active calories, and elevation via the altimeter — useful for monitoring vertical gain on Canadian mountain hikes or ski days. For cardio workouts, it uses connected GPS from a paired smartphone rather than built-in GPS, meaning pace and route data require carrying your phone. According to Withings’ published spec sheet, the high dynamic range accelerometer detects workout start and stop automatically, so the watch logs activity without requiring manual activation. The absence of onboard GPS is the most significant limitation for dedicated runners or cyclists who want independent wrist-only tracking on Amazon.ca-shipping trails and paths.

The Withings Health Mate app presents health data in plain language with Cardio Health Score, Sleep Score, and Activity Score trend graphs — accessible for users who are new to health wearables. The app integrates with Apple Health and Google Health Connect, so data flows into your existing health ecosystem without manual export. Withings+ is an optional $9.95/month subscription (or $99.50/year) adding cardiologist review sessions and coaching — but all core sensor data and scores are available free, which is a meaningful advantage over platforms that paywalled basic data.

How Does It Stack Up Against the Competition?

The ScanWatch 2 operates in a narrow but growing segment of health-focused hybrid watches. Here’s how it compares to the most relevant alternatives available in Canada.

Is the Withings ScanWatch 2 Worth It?

For Canadian buyers, the ScanWatch 2 is the right choice for one specific profile: someone who wants medical-grade cardiovascular monitoring — ECG, AFib detection, continuous heart rate, SpO2, and skin temperature — but wants it in a traditional watch they can wear to the office, to formal events, and to bed without looking like they’re wearing fitness tech. The 35-day battery ceiling (with 2-week real-world longevity in active use) means you’re not hunting for a charger every other night during a busy Canadian work week, and the sapphire crystal case holds up to the daily knocks of an active lifestyle. It’s available on Amazon.ca with Prime delivery to most Canadian provinces.

Who should look elsewhere: runners and cyclists who need independent built-in GPS for route tracking will be frustrated by the connected-GPS limitation. Buyers on a tighter budget can get ECG and solid health tracking from the Samsung Galaxy Watch 7 for around $390 CAD. And anyone who wants a rich app ecosystem, Google Pay, or contactless transit payments on their wrist will find the ScanWatch 2’s deliberately minimal smart feature set restrictive. But as a health-monitoring timepiece designed to be worn continuously, it remains one of the most capable devices in its category available to Canadian consumers.

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Sarah MitchellSenior Editor

Sarah has spent more than a few decades — she's not saying how many — in home design, with a sharp eye for products that deliver real quality without the inflated price tag. Her passion is finding the hidden gem that makes everyday life genuinely better.

Content produced with AI-assisted research — editorial policy →