![Samsung Galaxy Watch 8 (2025) 40mm Bluetooth Smartwatch, Cushion Design, Fitness Tracker, Sleep Coaching, Running Coach, Energy Score, Heart Rate Tracking, Silver [US Version, 2 Yr Warranty] Silver 40mm Bluetooth Watch8](https://i.shopsavvy.com/https://x.shopsavvy.com/https://m.media-amazon.com/images/I/31LaWf6wVqL._SL500_.jpg)
Yes, the Samsung Galaxy Watch 8 has FDA-authorized sleep apnea detection—one of the first smartwatches with regulatory approval to identify signs of obstructive sleep apnea (OSA).
How It Works
The BioActive Sensor monitors blood oxygen (SpO2) levels while you sleep, detecting patterns of oxygen desaturation that indicate breathing interruptions. The watch estimates an apnea-hypopnea index (AHI) based on this data.
Requirements
- Age: 22 years or older
- Sleep: Minimum 4 hours per night
- Monitoring: Two nights within 10 days
- Phone: Samsung smartphone required
- Software: Wear OS 5.0+, Samsung Health Monitor app
Clinical Validation
FDA De Novo authorized in February 2024. Clinical study (620 participants):
- Sensitivity: 82.7% for moderate-to-severe OSA
- Specificity: 87.7%
- Blood oxygen accuracy within 2% of medical-grade oximeters
Understanding Results
- "Possible apnea detected" — Consult a sleep specialist
- "Nothing detected" — No moderate-to-severe OSA signs found
Limitations
- Detects only moderate-to-severe OSA (AHI ≥15)
- May miss mild sleep apnea
- Inaccurate with heart/lung/neurological conditions
- Cannot monitor treatment effectiveness
- Samsung phone required—not available on other Android devices
Availability
Approved in 70+ countries including US (FDA), Europe (CE), South Korea, and Brazil.
This is a screening tool, not a diagnosis. If apnea is detected, see a sleep specialist for proper evaluation. Learn more about sleep tracking watches and their health features.
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How we researched this
Where this comes from: this answer draws on the product's published specifications and the reviews ShopSavvy collected for it, alongside prices from 1 retailer in ShopSavvy's price data, most recently seen Jun 17, 2026.
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