Here’s how Apple Watch Ultra 4 will differentiate itself from prior models

Apple Watch Ultra 4 is set to launch on September 9, and it's expected to introduce several key upgrades that will set it apart from previous models. Digitimes has reported that the device will feature a doubled number of sensor components, while Mark Gurman suggests that fitness tracking enhancements are also on the way. Additionally, there's evidence that a high blood pressure-related feature has been reviewed by the FDA for eventual release.

The Ultra 4 is rumored to lean heavily into health and fitness tracking, leveraging a brand new, more powerful chip—likely named S11 or S12—for both speed and performance improvements. This marks the first meaningful boost since 2023 when the S10 chip debuted. The arrival of this new chip, possibly in conjunction with Siri AI's debut in watchOS 27, could position the Apple Watch Ultra 4 as the first mass-market AI wearable.

While there are conflicting reports about the design of the new device, it's possible that Apple may introduce a ceramic case option, similar to the Series 12. This could provide a unique design element for the Ultra 4. The exact nature of these design changes remains unclear, but they may help differentiate the Ultra 4 from its predecessors.