importantSYS.SOURCE: Apple• 2026-09-09T17:56:57Z
Apple Unveils Apple Watch Ultra 4 with Advanced Health and Fitness Features
Apple Watch Ultra 4 introduces the Health Sensing System with enhanced heart rate accuracy, higher-frequency measurements, and a readiness score for athletes. It features extended battery life up to 45 hours and improved on-device GPS, alongside new Apple Intelligence capabilities for Siri on watchOS 27.
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