Apple launches Watch Ultra 4 with smarter health tracking and on-device AI features

Apple has introduced the Apple Watch Ultra 4. On the outside, it looks largely identical to previous iterations, though it is now available in a black titanium finish alongside the standard natural titanium. The actual changes this year are internal, focusing on more frequent health data sampling, a longer-lasting battery, and the integration of Apple Intelligence.

Apple Watch Ultra 4 Specifications

Just like the Series 12, the Watch Ultra 4 also features the new S11 chip and Apple’s upgraded Health Sensing System. The updated optical and electrical sensors can measure your heart rate every five seconds throughout the day, while heart rate variability (HRV) is recorded up to 24 times more frequently than on the Ultra 3.

Apple is using the increased health data to introduce a new Readiness score. The feature provides a daily score from 0 to 10 based on your sleep, training load, and daytime vitals, helping you decide whether to train harder or take a rest day. Apple has also improved the pedometer for more accurate step counting and distance tracking during indoor walks and runs.

In terms of battery life, the Ultra 4 offers up to 50 hours of regular use or up to 84 hours with Low Power Mode enabled. The new Max Extended Workout mode provides up to 45 hours of continuous GPS tracking for outdoor activities. Apple has also improved charging speeds, with a 15-minute charge providing up to 18 hours of regular use.

For software, watchOS 27 adds some new AI tools that Apple is calling Audio Intelligence. If you ever get distracted and miss what someone said, a tool called Live Rewind lets you double-press the Digital Crown to read a quick transcript of the last 15 seconds. Siri can also summarize longer conversations for you. To address privacy concerns, Apple says the watch processes all of this audio locally in a secure part of the chip, meaning nothing is recorded, saved, or sent to their servers.

Pricing and Availability

The Apple Watch Ultra 4 maintains its predecessor’s pricing, starting at $799. Preorders are open now, and the device will be available in stores starting Friday, September 18.

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