by Withings • Model: HWA10
The Withings ScanWatch 2 (Model HWA10) is a medical-grade hybrid smartwatch incorporating a single-lead electrocardiograph (ECG) and a reflectance photoplethysmograph (PPG). It is designed for intermittent measurements to identify episodes of irregular heart rhythm suggestive of Atrial Fibrillation (AFib) and monitor median heart rate. Results are activated and displayed through the Withings companion app.
Eligibility may vary by provider and plan. Check with your HSA/FSA administrator for specific details.
Evidence-based evaluation by medical professionals
"The premier choice for users seeking a traditional timepiece that doubles as an FDA-cleared, long-term cardiac and sleep monitoring tool[cite: 836, 947]."
The Withings ScanWatch 2 (Model HWA10) is a sophisticated medical accessory that disguises its clinical capabilities within a hybrid analog design[cite: 834, 835]. It is primarily indicated for recording single-channel ECG rhythms and detecting Atrial Fibrillation (AFib) in adult patients[cite: 949, 950]. In clinical validation studies involving 262 subjects, the watch demonstrated a 96.3% sensitivity for AFib and 100% specificity for normal sinus rhythm on conclusive recordings, although 19.5% of strips were classified as inconclusive[cite: 1013, 1014]. Beyond cardiac care, the device tracks sleep duration and architecture, including light, deep, and REM stages, through its integrated photoplethysmography (PPG) and accelerometer sensors[cite: 836, 1179]. Its hardware construction is notably durable, utilizing stainless steel or titanium electrodes and a design rated for 30 days of typical use on a single charge[cite: 1001, 1004]. While it offers 'set-and-forget' convenience for heart and sleep health, it remains an informational screening tool rather than a diagnostic replacement[cite: 994, 995].
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