The Apple Watch Ultra 4 is ready for the new Siri | The Verge

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The Apple Watch Ultra 4 is ready for the new Siri

The latest version of Apple’s rugged wearable is here with some welcome upgrades.

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Apple announced the next version of the rugged and durable Apple Watch Ultra at today’s “Surprise and shine” event.

The Apple Watch Ultra 4 features a design that’s nearly identical to last year’s Apple Watch Ultra 3 but is powered by Apple’s new S11 processor, which replaces the aging S10 chip first introduced with the Apple Watch Series 10 in 2024. The S11 will bring some much-needed performance improvements to the Ultra 4 ahead of Apple’s upcoming watch OS 27 release that will include the smarter and more capable Siri AI assistant announced at Apple’s annual WWDC conference earlier this year.

The Apple Watch Ultra 4 features an improved sensor with upgraded electrodes for better ECG measurements alongside more power-efficient green LEDs allowing for more accurate heart rate measurements all day long and during physical activities. The improved energy efficiency allows the Ultra 4 to take heart rate readings up to 60 times more frequently than previous models at 5-second intervals. Heart rate variability measurements, a metric that provides insights about how your body responds to stress and recovery, can now be taken every five minutes.

Battery life has been improved to more than two days of use, or up to 50 hours, which is a significant improvement over the Ultra 3. In Low Power Mode, the Ultra 4 can go for up to 84 hours before needing a charge. A new Extended Workout mode provides up to 25 hours of battery life with GPS tracking and continuous heart rate readings, while an Max Extended Workout mode allows the Ultra 4 to track outdoor activities like runs, walks, and hikes for up to 45 hours.

The new model follows the Apple Watch Ultra 3, which launched last year. That watch debuted with upgrades including improved battery life, support for 5G networks on the cellular model, satellite-based messaging and emergency calling, and a slightly larger display thanks to a slimmed bezel.

At Apple’s annual WWDC conference earlier this year, the company introduced its smarter and more capable Siri AI assistant that will be coming to the newest Ultra models as part of its upcoming watch OS 27 release. The update will also include a redesigned app grid, improvements to health and fitness tracking, and battery life optimizations.

Developing… see our live blog for the latest details.

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