Apple Watch Ultra 3 vs. Ultra 4 Buyer's Guide
The Apple Watch Ultra 4 is now available for pre-order, featuring a new S11 chip, 4GB of RAM, and significantly improved battery life compared to the Ultra 3. It introduces an advanced Health Sensing System with more frequent heart rate and HRV tracking, along with new Audio Intelligence features. While the Ultra 4 offers better endurance and recovery insights, the article suggests that most existing Ultra 3 owners may not find the upgrade necessary unless they require specific training or accessibility benefits.
- ▪The Apple Watch Ultra 4 launches on September 18 at a starting price of $799, matching the cost of its predecessor.
- ▪The new model includes an S11 chip and 4GB of RAM, doubling the memory of the Ultra 3's 2GB configuration.
- ▪Normal use battery life increases from 42 hours on the Ultra 3 to 50 hours on the Ultra 4, with Low Power Mode extending to 84 hours.
- ▪The Ultra 4 features high-frequency background heart rate tracking every five seconds and more frequent HRV measurements for better recovery insights.
- ▪Audio Intelligence features such as Sound Recognition and Live Rewind are added, though some functions are in beta and require a compatible iPhone.
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| Original publisher | MacRumors |
| Canonical URL | https://www.macrumors.com/2026/09/16/apple-watch-ultra-3-vs-ultra-4/ |
| Publication time | Wed, 16 Sep 2026 12:40:15 +0000 |
| Retrieval time | 2026-09-16T12:43:41.266Z |
| Last seen | 2026-09-16T12:43:41.266Z |
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| Cluster | 1tAOH0UjGQc_ · 2 stories |
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Apple Watch Ultra 3 vs. Ultra 4 Buyer's GuideWednesday September 16, 2026 5:40 am PDT by Hartley CharltonThe Apple Watch Ultra 4 is now available for pre-order, bringing a new health sensing system, more memory, and longer battery life over its predecessor. Here's everything that's new. Last year, the Apple Watch Ultra 3 introduced a larger, more efficient display, satellite connectivity, 5G, and improved battery life. The Ultra 4 retains the same basic design and display, but focuses on more detailed health and fitness insights, new Audio Intelligence features, and further battery life improvements. It launches on Friday, September 18, at the same $799 starting price as the Ultra 3.
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