Withings ScanWatch 2 vs Apple Watch Series 10 - Clinical Comparison

Name: Apple Watch Series 10
Brand: Apple
Price: 399 USD
Rating: 95

Compare Withings ScanWatch 2 and Apple Watch Series 10 side-by-side with clinical performance scores, FDA status, pricing, and expert recommendations

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Withings ScanWatch 2

93 /100

Apple Watch Series 10

95 /100

+2% higher overall score

Withings ScanWatch 2

Withings

Score

Price

$350

Evidence

Strong

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Top Rated

Apple Watch Series 10

Apple

Score

Price

$399

Evidence

Strong

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Performance Metrics

Withings ScanWatch 2

Apple Watch Series 10

Performance Metrics

Withings ScanWatch 2

Apple Watch Series 10

ECG Accuracy

Measures how closely the device's rhythm recordings match clinical gold-standard ECG machines.

In clinical trials, the device achieved 96.3% sensitivity for AFib and 100.0% specificity for sinus rhythm, though 19.5% of real-world recordings may be inconclusive.

Provides a high-resolution Lead I EKG that meeting FDA requirements for diagnostic-quality rhythm classification of AFib and Sinus Rhythm.

+2% better ecg accuracy

ECG Accuracy

Measures how closely the device's rhythm recordings match clinical gold-standard ECG machines.

+2% better

Ease of Use

Evaluates the simplicity of the hardware interface and the physical process of taking a reading.

On-demand ECG measurements are performed simply by touching the stainless steel bezel for 30 seconds, with results displayed instantly on the watch's OLED screen.

Taking an ECG is effortless, requiring only a finger on the crown for 30 seconds, with immediate haptic confirmation and result display.

+3% better ease of use

Ease of Use

Evaluates the simplicity of the hardware interface and the physical process of taking a reading.

+3% better

Health Feature Set

Assesses the breadth and depth of available health monitoring tools, including sensors and alerts.

Integrates ECG, SpO2, continuous temperature tracking, and respiratory rate monitoring alongside standard activity and sleep tracking.

Comprehensive suite includes ECG, SpO2, temperature sensing, sleep apnea notifications, and high/low heart rate alerts.

+3% better health feature set

Health Feature Set

Assesses the breadth and depth of available health monitoring tools, including sensors and alerts.

+3% better

Value for Money

Compares the device's features and clinical utility against its market price and subscription costs.

Offers medical-grade sensors and exceptional battery life at a competitive price, with an optional but not mandatory Withings+ subscription for advanced insights.

Offers some of the most advanced health sensors available at a mid-range premium price with no mandatory monthly subscription for health data.

+2% better value for money

Value for Money

Compares the device's features and clinical utility against its market price and subscription costs.

+2% better

Clinical Efficacy

Withings ScanWatch 2

Apple Watch Series 10

Clinical Efficacy

Withings ScanWatch 2

Apple Watch Series 10

AFib Detection Accuracy

The accuracy of the device in correctly identifying Atrial Fibrillation.

Clinical studies yielded 96.3% sensitivity and 100.0% specificity; public database testing showed sensitivity as high as 99.06%.

Clinical studies show 98.3% sensitivity in detecting AFib, with high specificity (99.6%) for sinus rhythm when using the ECG app.

+2% better afib detection accuracy

AFib Detection Accuracy

The accuracy of the device in correctly identifying Atrial Fibrillation.

+2% better

Heart Rate Monitoring Accuracy

The precision of heart rate tracking during rest and physical activity.

The multi-channel PPG sensor achieved a QRS complex detection F1-score of 99.19% in clinical datasets.

+2% better heart rate monitoring accuracy

The 3rd-generation optical sensor provides excellent validity (ICC = 0.98) at rest and during moderate exercise compared to chest-strap monitors.

Heart Rate Monitoring Accuracy

The precision of heart rate tracking during rest and physical activity.

+2% better

SpO2 Measurement Accuracy

How closely blood oxygen readings match medical-grade pulse oximeters.

Clinically validated for spot-checking SpO2 levels; however, factors like motion and tattoos can affect individual readings.

Mean error of approximately 0.46% compared to ABG in emergency settings; however, outliers can occur in healthy users depending on wrist placement.

+2% better spo2 measurement accuracy

SpO2 Measurement Accuracy

How closely blood oxygen readings match medical-grade pulse oximeters.

+2% better

Health Alert Reliability

The dependability of automated alerts for irregular rhythms or high/low heart rates.

Provides proactive notifications for temperature shifts and heart rate anomalies (non-US only for irregular rhythm notifications).

The irregular rhythm notification feature is highly reliable for identifying sustained AFib, though it is intended for passive monitoring rather than real-time diagnosis.

+3% better health alert reliability

Health Alert Reliability

The dependability of automated alerts for irregular rhythms or high/low heart rates.

+3% better

Specifications

Specification	Withings ScanWatch 2	Apple Watch Series 10
Price	$350	$399
FDA Status	FDA 510(k) Cleared	FDA 510(k) Cleared
Clinical Evidence	Strong Clinical Evidence	Strong Clinical Evidence
Clinical Recommendation	Highly Recommended	Highly Recommended
Connectivity	bluetooth	bluetooth wifi nfc

Value for Money

93 score / $350

26.6

value score

12% better value

95 score / $399

23.8

value score

Value score = Performance score ÷ Price × 100

Withings ScanWatch 2

Strengths

✓ Incredible 35-day battery life reduces charging anxiety and improves data continuity
✓ FDA-cleared single-lead ECG with high clinical specificity (100.0%)
✓ Continuous 24/7 temperature monitoring for early illness detection
✓ Elegant analog design suitable for formal and professional settings
✓ Comprehensive PDF reporting for medical-grade data sharing with doctors

Limitations

× Approximately 19.5% of ECG recordings may be deemed inconclusive in clinical settings
× Small 0.63-inch grayscale OLED display may be difficult for some to read
× Irregular heart rhythm notifications are currently not available for US users

Apple Watch Series 10

Strengths

✓ Thinner design and larger, more readable wide-angle OLED display
✓ FDA-cleared ECG app with clinically proven AFib detection
✓ Advanced sleep apnea notifications via accelerometer monitoring
✓ Extremely fast charging (80% in 30 minutes) supports 24/7 wear
✓ No monthly subscription required to access and share health data

Limitations

× Battery life (18 hours) requires daily charging compared to the Ultra 2
× Only compatible with iPhone; lacks Android support
× SpO2 and ECG features are not intended for users under age 22

Expert Review Summary

Our clinical assessment and verdict for each device

Withings ScanWatch 2

Highly Recommended

"A sophisticated hybrid watch that bridges the gap between traditional aesthetics and advanced medical-grade health surveillance, featuring an industry-leading 35-day battery life."

The Withings ScanWatch 2 (Model HWA10) is a premier hybrid smartwatch that integrates advanced clinical sensors into a timeless analog design. Its core medical utility centers on the Scan Monitor, which is FDA-cleared for recording single-lead ECG rhythms to detect Atrial Fibrillation (AFib). Clinical validation in a study of 262 subjects demonstrated a 96.3% sensitivity for AFib detection and 100.0% specificity for normal sinus rhythm. Beyond its EKG capabilities, the device features the TempTech 24/7 module, which uses a heat-flux sensor and a temperature sensor to provide continuous baseline temperature variations. It also passively monitors for irregular heart rhythms via a multi-channel PPG sensor and tracks blood oxygen (SpO2) levels. Designed for health-conscious adults (22+ in the U.S.), the ScanWatch 2 offers a 'spot-checking' approach to health monitoring, providing professional-grade PDF reports for easy data sharing with clinicians. While its grayscale OLED screen is minimal, its 35-day battery life ensures near-continuous health data collection that few other smartwatches can match.

Strong Clinical Evidence

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Apple Watch Series 10

Highly Recommended

"The Apple Watch Series 10 is the gold standard for daily health monitoring, offering high-fidelity cardiac screening and sleep health insights in a sleek, comfortable package."

The Apple Watch Series 10 continues Apple's tradition of integrating serious medical-grade sensing into a consumer-focused smartwatch. The device features an upgraded S10 SiP and a wide-angle OLED display that is up to 40% brighter when viewed at an angle, significantly improving the readability of ECG waveforms in various lighting conditions. Its core health utility lies in the FDA-cleared ECG app, which provides a single-lead EKG by completing a circuit between the crystal on the back and the Digital Crown. Clinical validation for this feature has demonstrated 98.3% sensitivity for AFib and 99.6% specificity for sinus rhythm. Additionally, the Series 10 introduces advanced sleep apnea notifications, utilizing the accelerometer to monitor breathing disturbances during sleep. While it lacks the extreme battery life of the Ultra 2, its fast-charging capabilities-reaching 80% in approximately 30 minutes-ensure it can be worn nearly 24/7 for consistent health surveillance. The seamless integration with the iOS Health ecosystem makes it the most effective tool for long-term health trending and professional data sharing.

Strong Clinical Evidence

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Where to Buy

Verified purchase options and current availability

Withings ScanWatch 2

$350 MSRP

Withings Direct

$349.95

3-5 business days FSA/HSA eligible; includes 1-year limited warranty.

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Amazon

$349.95

1-2 days (Prime) Free shipping and returns; often available with bundled accessories.

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Best Buy

$349.99

Same-day pickup In-store demonstration available in select locations.

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Manufacturer Site

HSA/FSA: Usually Eligible

Apple Watch Series 10

Top Choice

$399 MSRP

Amazon

$349.00

1-2 days Frequently discounted; HSA/FSA eligible.

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Walmart

$379.00

2-3 days Refurbished models available at significantly lower prices.

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Best Buy

$399.00

Same-day pickup My Best Buy members often receive exclusive pricing or rewards.

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Manufacturer Site

HSA/FSA: Usually Eligible

Important Purchase Considerations

• Prices shown are current as of the last update and may vary. Always verify pricing at the retailer's website.
• Some medical devices may require a prescription. Check with your healthcare provider before purchasing.
• Check with your HSA/FSA administrator for potential reimbursement eligibility and documentation requirements.
• Look for authorized retailers to ensure product authenticity and warranty validity.