Apple advances health and fitness capabilities using Apple Intelligence and the most accurate heart rate sensing in a wearable
Apple unveiled its most advanced health and fitness experience, with Apple Watch Series 12 and Apple Watch Ultra 4 introducing a new Health Sensing System that delivers the most accurate heart rate sensing in a wearable — measuring heart rate every five seconds and HRV every five minutes, a 24x frequency increase. The watches add a daily readiness score on a 0-10 scale with actionable recommendations, developed from the Apple Heart and Movement Study, and the new sensing was validated in a study of over 1,000 participants against leading wearables.
Key figures
- Lab panel biomarkers
- over 50
- Readiness score scale
- 0-10
- Watchos 27 availability
- September 14
- Heart rate sampling interval
- every five seconds
- Quest diagnostics locations us
- approximately 2,000
- Hrv sampling frequency increase
- 24x more frequently (every five minutes)
- Heart rate accuracy study participants
- over 1,000
AI analysis
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