Withings ScanWatch 2 Review: Where Elegance Meets Advanced Health Tracking

Introduction

The Withings ScanWatch 2 is a hybrid smartwatch that challenges the notion that health tracking must come at the cost of style. While most fitness trackers scream for attention with bright screens and rubber bands, this watch whispers sophistication with its analog face and stainless steel body. But beyond its stunning aesthetics lies a powerful suite of medical-grade sensors, including an ECG. However, as with any ambitious device, it has a few quirks that might give you pause before hitting 'buy.'

Design and Build: A Watch First, a Tracker Second

The ScanWatch 2 is unmistakably a classic timepiece. Its 42mm or 45mm case, available in silver, black, or champagne, is crafted from 316L stainless steel and topped with a scratch-resistant sapphire crystal. The analog hands and date window are complemented by a small OLED display hidden beneath the crystal—just enough to show notifications or health stats without ruining the elegant look. A rotating crown on the right side provides tactile navigation, while the strap options range from elegant leather to sporty silicone. This watch feels at home in a boardroom or on a run, a rare balance that few wearables achieve.

Health Monitoring: Beyond the Basics

Withings has packed the ScanWatch 2 with a remarkable array of sensors, making it a legitimate health companion. The star feature is the ECG (electrocardiogram) that can detect atrial fibrillation. Taking a reading is simple: rest your finger on the crown for 30 seconds, and the watch records a single-lead ECG. The results are stored in the Withings Health Mate app, which you can share with your doctor. We'll discuss some limitations in a moment.

Temperature and SpO2 Tracking

A new addition in this generation is a skin temperature sensor, which continuously monitors your wrist temperature overnight. This can be useful for detecting early signs of illness or tracking menstrual cycle patterns. The watch also measures blood oxygen saturation (SpO2) during sleep, a useful tool for assessing respiratory health. However, these are not FDA-cleared clinical devices—they're meant for wellness insight, not diagnosis.

Heart Rate and Sleep Analysis

The optical heart rate sensor runs 24/7, providing continuous monitoring that the watch uses to calculate daily activity, calories burned, and sleep stages. During the night, it detects light, deep, and REM sleep, and gives you a Sleep Quality Score. The watch also tracks snoring using the phone's microphone, which can be a bit intrusive but adds context to your sleep data.

Activity and Fitness Tracking: Light but Capable

If you're a marathon runner seeking granular stats like ground contact time, the ScanWatch 2 will disappoint. This is not a gym-focused device—it's built for general wellness. It automatically tracks steps, distance, and calories, and you can manually log over 30 workout types through the app. The watch itself can detect walking, running, swimming, and cycling. One standout feature is intelligent training: after a workout, the watch suggests recovery time based on your heart rate data.

For swimmers, the 50-meter water resistance and automatic swim tracking (distance, pace, strokes) work well. But don't expect advanced metrics like stroke efficiency—the focus here is on simplicity and battery life.

Battery Life and Connectivity

This is where the hybrid design truly shines. The ScanWatch 2 delivers up to 30 days of battery life on a single charge, though it dips closer to 20 days if you use the ECG frequently. That's a far cry from smartwatches that need daily charging. Charging is via a small magnetic puck that snaps to the back; it takes about two hours to fully charge.

The watch connects to your phone via Bluetooth and is compatible with both iOS and Android. Notifications for calls, texts, calendar alerts, and selected apps appear on the OLED display. You can even send quick replies (iOS only for certain apps). However, you cannot interact deeply with them—it's glance-and-go. GPS comes from a connected phone rather than an onboard chip, which limits standalone tracking.

Where It Falls Short

Despite its many strengths, the ScanWatch 2 has clear trade-offs. The lack of a full touchscreen and on-watch GPS means it can't fully replace a sports watch. The small OLED display can be hard to read in bright sunlight, and the tap-to-wake gesture is hit-or-miss. More critically, the ECG feature is limited to spot checks—it does not continuously monitor heart rhythm like the Apple Watch can. Also, the starting price of around $350 (for the 42mm version) puts it in premium territory, especially when you consider that full-featured smartwatches like the Galaxy Watch 6 aren't much more.

Finally, the Health Mate app, though well-designed, can be slow to sync and sometimes fails to update certain metrics without manual refreshes.

Conclusion: A Beautiful Compromise

The Withings ScanWatch 2 is not for everyone. If you live for data and need a wearable that tracks every rep, lap, and calorie with surgical precision, you'll want a dedicated fitness tracker. But if you value stealthy elegance, long battery life, and core medical features like ECG and temperature monitoring without looking like a cyborg, this hybrid smartwatch is a top contender. It's a watch that respects your style while keeping a light eye on your health—flaws and all.