About Apple Watch Ultra 4
Apple Watch Ultra 4 is Apple's 2026 rugged smartwatch for endurance sports, outdoor use, diving, and buyers who want the longest battery life in the Apple Watch range. Apple announced it on September 9 with the S11 chip, a new Health Sensing System, readiness scoring, improved HRV tracking, and longer battery life. Pre-orders are open now and general availability begins September 18. U.S. pricing starts at $799.
Ultra 4 keeps the 49mm Grade 5 titanium case and sits above Series 12. Its value is not that it runs different everyday apps. It is that the hardware is built for longer sessions away from a charger, brighter outdoor viewing, deeper water use, satellite communication, and endurance tracking that the Series line does not match.
Key specifications
Launch
| Announcement date | September 9, 2026 |
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| Availability | Pre-order now; available September 18, 2026 |
Pricing
| U.S. starting price | $799 |
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Case
| Size | 49mm |
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| Material | Grade 5 titanium |
| Colors | Natural, Black |
Display
| Display | Always-On Retina, wide-angle OLED |
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| Peak brightness | Up to 3000 nits |
Chip
| Processor | S11, 64-bit dual-core |
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| Neural Engine | 4-core Neural Engine |
Storage
| Capacity | 64GB |
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Health
| Key system | Health Sensing System with high-frequency heart rate and HRV tracking |
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| Readiness | 0-10 readiness score with actionable guidance |
Battery
| Normal use | Up to 50 hours |
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| Low Power Mode | Up to 84 hours |
| Max Extended Workout | Up to 45 hours |
Charging
| Quick charge | 15 minutes for up to 18 hours of battery life |
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Navigation
| GPS | Precision dual-frequency GPS |
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Connectivity
| Off-grid | Built-in satellite communications |
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Compatibility
| iPhone requirement | Requires compatible iPhone with current iOS |
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What is new in Apple Watch Ultra 4?
The biggest changes are health sensing and battery life. Ultra 4 uses Apple's new Health Sensing System with higher-frequency heart rate and HRV measurements, plus a readiness score that combines activity, training load, vitals, and sleep data into a single daily view.
Apple also moved the Ultra to the S11 chip. That enables Siri AI and new Audio Intelligence features while supporting the updated health system. For athletes, the more important change may be endurance: normal use rises to up to 50 hours, Low Power Mode to up to 84 hours, and Max Extended Workout tracking to up to 45 hours.
How long does Apple Watch Ultra 4 battery last?
Apple rates Ultra 4 for up to 50 hours of normal use and up to 84 hours in Low Power Mode. Max Extended Workout mode can track outdoor runs, walks, and hikes for up to 45 hours while continuing to take GPS readings every second.
Charging is faster as well. Apple says a 15-minute charge can add up to 18 hours of battery life. That makes Ultra 4 much easier to use for long races, multi-day trips, and sleep tracking than the standard Series model, though dedicated sports watches from Garmin and others can still last much longer between charges.
What health features does Ultra 4 include?
Ultra 4 includes the new Health Sensing System, readiness, Recovery HRV, high-frequency background heart rate tracking, ECG, Blood Oxygen where available, hypertension notifications, sleep score, sleep apnea notifications, wrist temperature sensing, and advanced cycle tracking.
Apple says the new optical heart sensor measures heart rate every five seconds throughout the day. The readiness system then uses recent activity, sleep, training load, vitals, and other signals to provide a 0 to 10 score with guidance such as Recover, Pace Yourself, Ready, or Go For It.
What display and case does Apple Watch Ultra 4 use?
Ultra 4 uses a 49mm Grade 5 titanium case in Natural or Black. It has a 422 by 514 pixel display, a 1245 square millimeter display area, and an Always-On Retina display that reaches up to 3000 nits. That higher brightness is useful outdoors and is one of the practical advantages over the Series 12 display.
The case includes the customizable Action button, Digital Crown, side button, siren, depth gauge, water temperature sensor, and antennas for GPS, cellular, and satellite communication.
What sports and outdoor features make Ultra 4 different?
Ultra 4 is designed for users who train longer or operate in conditions where battery, navigation, and durability matter more than case size. It supports precision dual-frequency GPS, outdoor workout modes, diving and water sports, hiking, cycling, running, swimming, and endurance-focused tracking.
Satellite communication is another differentiator. It can help with emergency and messaging functions outside normal mobile coverage, subject to regional availability and Apple's service requirements. That matters far more to a hiker or trail runner than to somebody who rarely leaves cellular coverage.
How does Ultra 4 compare with Apple Watch Series 12?
Series 12 is the better default for most iPhone owners. It is smaller, lighter, cheaper, and still includes the new Health Sensing System, readiness, ECG, Blood Oxygen where available, sleep features, and the S11 chip.
Ultra 4 earns its $799 starting price through hardware advantages: the 49mm titanium case, 3000-nit display, longer battery life, satellite capabilities, Action button, dive-oriented sensors, and longer workout tracking. If you do not need those advantages, Series 12 offers most of the everyday smartwatch experience for much less.
Who should buy Apple Watch Ultra 4?
Ultra 4 is a strong fit for trail runners, ultra runners, hikers, divers, open-water swimmers, cyclists, and people who spend extended time away from easy charging or cellular coverage. It also suits users who simply want Apple's longest battery life and do not mind the large 49mm case.
Owners of much older Apple Watch models may also find the move worthwhile if they want the health features and outdoor hardware in one device. For Ultra 3 owners, the decision is narrower and should depend on whether the improved battery, new readiness and HRV features, or S11-based intelligence functions solve a real need.
Who should consider another watch?
Buy Series 12 if you want the newest Apple health features but do not need the Ultra's size, satellite functions, or endurance battery. Buy SE 3 if cost is the main concern and basic smartwatch and fitness functions are enough.
Garmin, Suunto, Polar, and similar sports watches can be better choices for athletes who value battery life measured in many days, deep training analytics, or navigation tools more than Apple ecosystem integration. Android users should not buy Ultra 4 because Apple Watch requires an iPhone.
How much does Apple Watch Ultra 4 cost and when can you buy it?
Apple Watch Ultra 4 starts at $799 in the United States. Pre-orders opened September 9, 2026, and general availability begins September 18 in the U.S. and more than 50 other countries and regions.
The starting price covers the base Ultra 4 configuration, while band choices and special editions can change the final cost. Buyers should compare the exact configuration rather than treating $799 as the price of every Ultra 4 combination.
Where to buy
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Sources
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