Apple's high-end smartwatch just got a new chip, more AI features, better heart rate sensing, and more. Here's how the Apple Watch Ultra 4 compares to its predecessor.


Apple Watch Ultra 4 vs. Apple Watch Ultra 3: Apple's premium smartwatch is more useful than ever.
On Wednesday, alongside the iPhone Duo and iPhone 18 Pro, Apple unveiled the Apple Watch Ultra 4. Though the outside of the watch is effectively indistinguishable from the Apple Watch Ultra 3, the hardware inside packs a significant punch.

With Siri Recaps, Live Rewind, sound recognition, a redesigned health sensor system, better battery life, and an updated Health app on iOS 27, there's a lot to cover.


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