Archive · 11 Oct 2026
Apple Watch Ultra 4 Adds Health Tracking, Eases Battery Anxiety
The Apple Watch Ultra 4 looks much like the watch before it.
Its updated sensors can gather health information more often.
For example, it checks heart rate every five seconds and shows a short history.
The reviewer says the watch can last two days with normal use, or longer in low power mode.
Its software also makes favorite apps easier to find and lets people ask Siri questions.
Some advertised audio features were not available to everyone yet.
The reviewer could not get the readiness score to appear, even after wearing the watch to bed on seven nights.
They think the watch may suit people who want health tracking, but current Ultra owners may not need to upgrade.
The Ultra 4 keeps the previous model’s design but adds redesigned ECG electrodes and optical sensors.
It records heart rate every five seconds and displays a two-minute history, with separate sleep and daytime recovery HRV readings.
The reviewer says the watch lasted two days with regular use and cellular connectivity, or almost four days in low power mode.
watchOS 27 surfaces frequently used apps, while Siri can respond to contextual questions; some Audio Intelligence features were not yet available to all users.
The reviewer recommends it for regular Apple Watch users or first-time buyers, but says upgrades may not justify replacing an earlier Ultra.
- Who
- The reviewer, a diabetic and Apple Watch user, tested the Apple Watch Ultra 4.
- What
- A review of its updated health sensors, battery life, software features, and suitability as an upgrade.
- When
- The review discusses the newly introduced Apple Watch Ultra 4; no publication date is stated.
- Where
- The reviewer mentions using the watch on a two-day trip to Mumbai.
- Why
- The reviewer assessed whether its health-tracking and battery improvements make it a worthwhile purchase or upgrade.
- Starting price
- Rs 1,09,900
- Battery life
- The reviewer reports two full days with regular use and cellular connectivity.
- Low power mode
- The reviewer says battery life can reach almost four days.
- Heart-rate updates
- Every five seconds, with a two-minute history.
- Design
- The watch looks like its predecessor, while the back has additional electrodes and sensors.
- Readiness score
- It had not appeared for the reviewer after seven nights of wear; the reviewer suspected consecutive nights might be required.
- Upgrade advice
- The reviewer recommends it to regular Apple Watch users or first-time buyers, but finds the case weaker for owners of earlier Ultra models.