Apple Inc.

Apple Watch Ultra 4 keeps same design as Ultra 3 but adds S11 chip, Apple Intelligence, and two-day battery; preorders start at $799

Apple's new Watch Ultra 4 retains the design of its predecessor but introduces an S11 chip, enhanced health tracking features, and a two-day battery life. Preorders begin at $799, with the device set for wide availability on September 18.

Gizmodo Gizmodo11 September 2026 · 13:57 UTC
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Apple's Watch Ultra 4 was announced this week, showcasing a design identical to the Ultra 3 but featuring significant upgrades. The new S11 chip enhances performance and introduces Apple Intelligence, allowing for advanced health tracking capabilities.3

The Ultra 4 maintains the same 49mm case and always-on Retina display with a brightness of 3000 nits. It is also water-resistant up to 100 meters. The upgraded battery now provides two full days of usage, with 45 hours in extended workout mode and up to 18 hours of heart rate and GPS tracking. In comparison, the Ultra 3 offered only 20 hours of GPS tracking in Low Power Mode.

The S11 chip enables features like Live Rewind, which captures the last 15 seconds of conversation, and Siri Recap, summarizing discussions for later review. Additionally, Sound Recognition alerts users to important sounds, enhancing accessibility for those who are deaf or hard of hearing. Apple assures that these features are end-to-end encrypted and do not store recorded conversations.

The Ultra 4 is available for preorder at $799, with general availability starting on September 18.6

Key Insight
“The Ultra 4's redesigned sensor stack includes a larger electrode surface and ring-arranged photodiodes, making HRV measurements 24 times more frequent. New Audio Intelligence features like Live Rewind and Siri Recap are end-to-end encrypted and can be turned off entirely.”
CuriousCats studied:
1
GizmodoGizmodo
“Announced at this week’s , the Apple Watch Ultra 4 will look very similar to anyone who already owns last year’s Watch Ultra 3. By which I mean to say: it’s basically the exact same form factor and design.”
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