Apple Watch Ultra 4 is now official, bringing Apple’s most significant health-sensing upgrade yet to its rugged smartwatch. Announced on 10 September in Australia, the new model combines an S11 chip, heart-rate readings every five seconds, a daily readiness score, longer battery life and faster charging.
Australian customers can pre-order it now for A$1,349 including GST, with in-store availability beginning Friday, 18 September. Here is what has changed, who will benefit and whether an upgrade makes sense.
Apple Watch Ultra 4: price and release date in Australia
Apple Watch Ultra 4 starts at A$1,349 in Australia and comes in natural or black titanium. Pre-orders are open, while deliveries and retail availability begin on 18 September. The price keeps it firmly in premium sports-watch territory, so the buying decision depends less on novelty and more on whether its endurance, health and outdoor features suit your routine.
The watch ships alongside Apple’s newly announced hardware features. watchOS 27 is scheduled for 15 September in Australia and also supports Apple Watch Series 9 or later, Apple Watch SE 3, and Apple Watch Ultra 2 or later when paired with a compatible iPhone running iOS 27.
What is new in Apple Watch Ultra 4?
New Health Sensing System and S11 chip
The headline upgrade is Apple’s Health Sensing System, built around new optical and electrical heart sensors. Apple says the watch measures heart rate every five seconds throughout the day and records heart-rate variability (HRV) up to 24 times more often. That extra sampling feeds more detailed daytime and overnight Vitals views.
Apple bases its accuracy claim on a study of more than 1,000 participants, but wearable readings should still be treated as wellness information rather than a diagnosis. Anyone concerned about symptoms or unusual readings should speak with a qualified health professional.
A daily readiness score
Readiness turns activity, training load, vitals and sleep data into a score from zero to 10. The watch then offers one of four simple recommendations: Recover, Pace Yourself, Ready or Go For It. Unlike a static morning score, it can change during the day after a demanding workout or a shift in your measurements.
This could be useful for runners and endurance athletes, but it is also relevant to everyday users deciding whether to train hard or prioritise rest. Apple says its algorithm was developed using data from the Apple Heart and Movement Study with input from physicians and exercise scientists.
Up to 50 hours of everyday battery life
Apple rates Apple Watch Ultra 4 for up to 50 hours of normal use and up to 84 hours in Low Power Mode. Its Extended Workout mode can record outdoor activity for up to 25 hours with full GPS and heart-rate readings. A Max Extended Workout mode stretches outdoor run, walk and hike tracking to 45 hours while retaining one-second GPS readings.
Charging is faster too: Apple says 15 minutes provides up to 18 additional hours. Real-world endurance will vary with mobile connectivity, display use, temperature, workouts and battery age, but these figures make the Ultra 4 more practical for weekends away and long events.
Apple Intelligence and redesigned Health app
With watchOS 27, Apple Intelligence powers Siri AI on supported setups, including personal-context understanding and broader knowledge. Separate Audio Intelligence features are planned for later in the year, designed to help users remember important moments from conversations and notice significant sounds.
A redesigned Health app for iPhone is also due later this year. Its new Longevity tab will include Health Age, which compares selected metrics—such as VO2 max, resting heart rate, sleep and HRV—with a user’s chronological age. Availability can vary by device, language and region, so buyers should not assume every advertised intelligence feature will be ready on day one.
Key specifications at a glance
| Feature | Apple Watch Ultra 4 |
|---|---|
| Chip | S11 |
| Health highlight | New optical and electrical sensors; heart-rate readings every five seconds |
| Recovery insight | 0–10 readiness score with four recommendations |
| Everyday battery | Up to 50 hours |
| Low Power Mode | Up to 84 hours |
| Longest outdoor tracking | Up to 45 hours in Max Extended Workout mode |
| Australian price | From A$1,349 inc. GST |
| Availability | 18 September 2026 |
Who should buy Apple Watch Ultra 4?
The strongest case is for athletes, hikers, divers and travellers who value long battery life, rugged titanium construction, precise on-device GPS and satellite safety capabilities. It may also appeal to users who want Apple’s newest heart-rate and recovery insights and are comfortable paying a premium for them.
For casual activity tracking and notifications, Apple Watch Series 12 may be the better-value choice. Existing Ultra owners should focus on the new sensing frequency, readiness feature and extra endurance rather than upgrading simply because a new generation exists. Our earlier Apple Watch Series 12 preview provides useful background, although Apple’s final announcement now supersedes the rumoured details.
Pros
- Longer everyday and workout battery life
- More frequent heart-rate and HRV measurements
- Actionable readiness score
- Faster charging for overnight tracking
Cons
- High A$1,349 starting price
- Many owners of recent Ultra models may not need to upgrade
- Some Health app and intelligence features arrive later
Should you upgrade?
Upgrade if your current watch regularly runs out of power during long activities, or if the new readiness and higher-frequency health measurements would materially improve your training. Owners of a standard Apple Watch who want stronger outdoor endurance will see the clearest difference.
If your existing Ultra still meets your needs, waiting is sensible. The core experience remains familiar, and some software improvements arrive through watchOS 27 on older supported watches. Before switching, check feature availability in Australia, confirm iPhone compatibility and back up your existing watch through its paired iPhone.
Final thoughts
Apple Watch Ultra 4 is a focused upgrade built around better sensing, recovery guidance and endurance rather than a dramatic redesign. Its A$1,349 price makes it a specialist purchase, but the combination of 50-hour battery life, faster charging and richer health data should be compelling for serious outdoor and fitness users.
FAQs
How much does Apple Watch Ultra 4 cost in Australia?
It starts at A$1,349 including GST, according to Apple Australia.
When is Apple Watch Ultra 4 available?
Pre-orders are open now, with Australian store availability and deliveries beginning Friday, 18 September 2026.
How long does the battery last?
Apple quotes up to 50 hours of everyday use, 84 hours in Low Power Mode and up to 45 hours for supported outdoor activities in Max Extended Workout mode.
What does the readiness score measure?
It combines recent activity, training load, vitals and sleep into a zero-to-10 score, then suggests whether to recover, pace yourself or train more confidently.
Does Apple Watch Ultra 4 require a new iPhone?
Apple says watchOS 27 requires iPhone 11 or later, or iPhone SE (2nd generation or later), running iOS 27. Individual features can have additional requirements.
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