Apple unveils Apple Watch Ultra 4

Apple introduced Apple Watch Ultra 4 — the ultimate sports and adventure watch — now including new, advanced health and fitness features, and longer battery life.

Engineered with the new Health Sensing System and S11 chip, Apple Watch Ultra 4 delivers the most accurate heart rate sensing in a wearable, higher-frequency heart rate and heart rate variability (HRV) measurements, and a new readiness score to support athletes of all kinds. Apple Watch Ultra 4 also offers extended battery life to track outdoor workouts for up to 45 hours and the most accurate on-device GPS in a sports watch. A redesigned Health app on iPhone arrives later this year, including a new Longevity tab with a Health Age feature showing how metrics are tracking relative to a user’s age. In addition to powering the Health Sensing System, the S11 chip — Apple’s most powerful wearable chip — enables new Audio Intelligence features arriving later this year, to help users remember key moments from their conversations and stay alert to important sounds, built with privacy, security, and accessibility innovations at the core. With watchOS 27, Apple Intelligence powers Siri AI on Apple Watch, bringing personal context understanding and broad world knowledge to the wrist.

These features add to the many ways Apple Watch Ultra already supports users with advanced workout tracking across activities, sleep tracking, powerful health features like heart health notifications and the ECG app, and game-changing safety capabilities like satellite communications. Apple Watch Ultra 4 is the most comprehensive wearable across health, fitness, and safety.

Apple Watch Ultra 4 comes in sleek and durable natural and black titanium options. It is available to pre-order today, with availability beginning Friday, September 18.

“The new Health Sensing System and S11 chip take Apple Watch Ultra 4 — our most rugged and capable Apple Watch — to the next level, delivering longer battery life, faster charging, and the most accurate heart rate sensing in a wearable,” said Kaiann Drance, Apple’s vice president of Worldwide Apple Watch Product Marketing. “With powerful health and fitness insights including readiness, new intelligent features, and its large, bright display, Apple Watch Ultra 4 is designed to support you wherever you go, from your workouts, to adventures, to everything you tackle in a day.”

The Most Accurate Heart Rate Sensing in a Wearable

Apple Watch Ultra 4 is re-architected to provide continuous high-fidelity health monitoring using the Health Sensing System, featuring new optical and electrical heart sensors. Using this system and the S11 chip, Apple Watch Ultra 4 offers the most accurate heart rate sensing in a wearable. A scientifically rigorous study on a diverse population of over 1,000 participants compared the new heart rate sensing accuracy on Apple Watch against leading wearables, with Apple Watch showing the highest accuracy across devices.

With larger, power-efficient green LEDs on the optical heart sensor, Apple Watch Ultra 4 now measures heart rate every five seconds, all day long. This continuous passive measurement delivers deeper insight into a user’s fitness and physiological state while making Exercise and Move Activity rings even more accurate. Users can view their real-time heart rate at a glance throughout their day on a new heart rate watch face complication.

HRV, a key indicator of stress and recovery, is now measured up to 24 times more often and available to view in a new section of the Heart Rate app. Apple Watch provides two separate variants of HRV for better understanding of a user’s health status. Recovery HRV is best for identifying daily signals of stress and recovery, while overall HRV is best for insights into a user’s broader health, including cardiovascular health. Higher variability is generally associated with better overall recovery, while a lower variability value is an indicator of stress.

Overnight vitals now includes recovery HRV measurements analyzed against a user’s personal baseline, providing a more complete view of their health status. A new daytime vitals view lets users toggle between overnight and daytime metrics, and can potentially spot shifts in their metrics before they show up overnight.

Readiness: A Daily Read on the Body’s Capacity

Apple Watch Ultra 4 introduces readiness, a new feature that analyzes a user’s recent activity, training load, vitals, and sleep score to offer insight into their capacity for the day ahead. Readiness provides a single 0-10 score each day with a clear, actionable recommendation: Recover, Pace Yourself, Ready, or Go For It. This helps a user decide how to take on their day, whether they’re headed into a workday or tackling their training plan.

Readiness updates throughout the day as new data comes in, to reflect, for example, an intense workout or a shift in daytime vitals. Readiness clearly highlights which factors are driving the score and allows users to tap into more details. The scoring algorithm was developed using data from the Apple Heart and Movement Study, in collaboration with exercise scientists and physicians at Apple.

Longer Battery Life and Faster Charging

For everyday use, Apple Watch Ultra 4 now offers more than two days of battery life, up to 50 hours. In Low Power Mode, it offers up to 84 hours of battery life. Charging is now faster than ever: Just 15 minutes adds up to 18 hours of additional battery life.

For outdoor workout tracking, the new Extended Workout mode delivers up to 25 hours of battery life for tracking workouts with full GPS and heart rate readings — a 25 percent increase from the previous model. For even longer workouts, the Max Extended Workout mode allows Apple Watch Ultra 4 to track outdoor runs, walks, and hikes for up to 45 hours, typically enough to finish a 100-mile race, while still taking GPS readings every second.

The Most Accurate Step Tracking of Any Smartwatch

The pedometer model has been completely redesigned with new machine learning algorithms and the S11 chip to provide more accurate distance measurements during indoor walk or run workouts, and more accurate step counts all day. As a result, Apple Watch Ultra 4 now offers the most accurate step tracking of any smartwatch. The S11 chip also enables the brand-new Steps complication, so users can track their steps in real time, right from their watch face.

A Redesigned Health App Offering a Holistic View of Long‑Term Health

The Health app on iPhone serves as a central and secure location for a user’s health and fitness information, uniquely positioning it to provide a better understanding of a user’s health. The Health app has been redesigned to dynamically respond to a user’s data using Apple Intelligence, with a new Insights tab that surfaces timely health information and a new Longevity tab that analyzes a user’s longitudinal health data for deeper insights. The Longevity tab includes Health Age, an Apple Watch feature that shows users how certain metrics are tracking relative to their actual age.

The Health app also includes movement evaluations that measure flexibility, strength, balance, and more using vision-based AI models on iPhone and heart rate data from Apple Watch. Users will be able to schedule and purchase new labs that feature over 50 key biomarkers for $119 directly through the Health app at approximately 2,000 Quest Diagnostics locations in the U.S. The redesigned Health app will arrive later this year, starting in U.S. English.

Audio Intelligence: A New Way to Stay More Present and Engaged Throughout the Day

Since Apple Watch is always on a user’s wrist, it is the perfect device to help users stay alert to important sounds and stay present and engaged in conversations throughout the day. With the built-in microphone, the power of the S11 chip, the latest Apple Intelligence models on iPhone, and Private Cloud Compute, Apple Watch Ultra 4 offers a brand-new class of Apple Intelligence features. Audio Intelligence helps users stay aware of the world around them, catch what they missed, and remember key moments — with user control, privacy, security, and accessibility at the center of its design.

Audio Intelligence features include:

• Sound Recognition, which comes to Apple Watch to alert users who are deaf or hard of hearing of important sounds, even when their iPhone isn’t with them. This feature listens for sounds like sirens, alarms, doorbells, or a baby crying, and uses on-device intelligence to notify users when they’re detected.

• Live Rewind, which can help users recall what was just said in conversation. A double press of the Digital Crown shows the previous 15 seconds of a conversation as a text snippet, so users can catch something they may have missed or are less familiar with. Users can ask Siri about the content of the text or save it to the Siri app to revisit later.

• Siri Recap, which can create high-level summaries of conversations that users can review later to jog their memory. When Siri Recap is turned on, after a conversation, Apple Intelligence automatically generates a title and key points in the new Siri app, allowing users to be more present and engaged in the moment.

• Shazam, which instantly detects the music playing around the user and automatically displays the song title and artist’s name on the Music Recognition widget in the Smart Stack, easily glanceable on the wrist.

Privacy by Design

Audio Intelligence features are private by design, combining hardware, software, and services to protect user privacy in a way that only Apple can. These features do not create or store audio recordings, and raw audio used for processing is completely inaccessible to the operating systems, apps, the user, or Apple. This is because the S11 chip on Apple Watch Ultra 4 includes Secure Exclave, a dedicated hardware-isolated compartment that processes audio in complete isolation from the rest of the system, then immediately deletes it.

Users are in control and can choose whether to opt in to each Audio Intelligence feature. They can decide exactly where and when Siri Recap takes notes, and can turn Siri Recap on or off at any time, right from Control Center.

By design, Audio Intelligence features do not identify and attribute speakers, to protect the privacy of both the user and those around them. Siri Recap produces a brief, high-level summary of conversations — not a transcript — and is designed to exclude sensitive information like financial information or government-assigned identifiers. Live Rewind plays an audible chime when it is being used, even if Apple Watch is on silent, and shows a full-display animation and microphone indicator so people nearby can hear and see that the feature has been activated.

Live Rewind text snippets and Siri Recap summaries are end-to-end encrypted in the Siri app with iCloud syncing, and are not accessible even by Apple.

Siri AI Brings Personal Context Understanding and Broad World Knowledge

With watchOS 27, Apple Watch Ultra 4 supports Siri AI, an entirely new version of Siri powered by Apple Intelligence. The new Siri app lets users continue conversations on the go and tap into Apple Intelligence capabilities — like personal context understanding and broad world knowledge — making Apple Watch an even more intelligent companion on the wrist. A new Siri Modular watch face makes it even easier to access Siri throughout the day.

Featuring watchOS 27

watchOS 27 brings a range of additional updates to Apple Watch Ultra 4, including:

• A dynamic app grid featuring the icons for five Siri-suggested apps, which are a user’s most-used and recently used Apple Watch apps.

• A new single-handed tap gesture, which lets users conveniently open a widget in the Smart Stack by tapping their index finger and thumb. Now users can use the double tap gesture to scroll through the Smart Stack and single tap to select an individual widget — all using only one hand.

• Smart Stack widget suggestions, which surface when they are most relevant, like a Parked Car suggestion from Maps or a Birthday Message suggestion on a close contact’s birthday.

• Support for perimenopause and menopause in Cycle Tracking on Apple Watch and in the Health app on iPhone.

• Support for Workout Buddy on Apple Watch when users don’t have their iPhone nearby. Workout Buddy also now incorporates even more fitness data when delivering motivational insights, and is now available in Spanish in addition to English.

Lineup and Bands

Apple Watch Ultra 4 is available in natural and black titanium.

This fall’s band lineup features new colors across the range. Trail Loop now comes in dark umber, sand, and burgundy, while Alpine Loop comes in desert, dark olive, and burgundy.

Ocean Bands are now made from a unique translucent silicone, which comes in three new colors: translucent gray, translucent kelp, and translucent black.

Apple Watch Hermès Ultra 4

In addition to Apple Watch Hermès Ultra 4 available in natural titanium, the Apple Watch Hermès collection introduces a bold new Grand H titanium band featuring a built-in extension mechanism to conveniently adjust the band to fit over a wet suit. Apple Watch Hermès Ultra 4 also features the new Fathom and Wonder watch face, which allows users to explore an illustration of the ocean’s depths. Rotate the Digital Crown to select one of four watch face options, from the surface to the seabed. Each option features a unique shade of blue and distinct animations.

Apple Watch Ultra 4 and the Environment

The new Apple Watch Ultra 4 was built with the environment in mind and drives progress toward Apple’s ambitious plan to be carbon neutral across its entire footprint by 2030. It is made with 45 percent recycled material overall, including 100 percent recycled titanium in the 3D-printed titanium case and 100 percent recycled cobalt in the battery. All of the electricity used to manufacture Apple Watch Ultra 4 is sourced from renewable energy, like wind and solar, across the supply chain, and Apple has also invested in enough renewable energy around the world to match the electricity customers use to charge their Apple Watch. Like all Apple products, its paper packaging is 100 percent fiber-based and can be easily recycled at home.

Pricing and Availability

• Customers in Australia, Canada, France, Germany, India, Japan, the UAE, the UK, the U.S., and more than 50 other countries and regions can pre-order Apple Watch Ultra 4 today, with availability in stores beginning Friday, September 18.

• Apple Watch Ultra 4 starts at $799 (U.S.).

• New Apple Watch bands will be available to order today from apple.com/store and in the Apple Store app, with availability in stores beginning Friday, September 18.

• watchOS 27 will be available for Apple Watch Series 9 or later, Apple Watch SE 3, and Apple Watch Ultra 2 or later on Monday, September 14, and requires iPhone 11 or later or iPhone SE (2nd generation or later) with iOS 27. Not all features are available on all devices or in all regions.

• Apple Intelligence will be available with watchOS 27 on Monday, September 14, for users with an Apple Intelligence-enabled device set to a supported language. Apple Intelligence is available with support for these languages: English, Danish, Dutch, French, German, Italian, Norwegian, Portuguese, Spanish, Swedish, Turkish, Vietnamese, Chinese (simplified), Chinese (traditional), Japanese, and Korean. Some features may not be available in all regions or languages.

• Siri AI is rolling out with watchOS 27 as a beta on Monday, September 14, for users with a supported device set to English, with support for French, Japanese, Korean, Portuguese, and Spanish coming in October. Some features may not be available in all regions or languages.

• New subscribers may get three months of Apple Fitness+ and Apple Music with the purchase of Apple Watch Series 12, Apple Watch SE 3, or Apple Watch Ultra 4. Offer and service availability varies by region.

• AppleCare delivers exceptional service and support, with flexible options for Apple users. Customers can choose AppleCare+ to cover their new Apple Watch or, in the U.S., AppleCare One to protect multiple products in one simple plan. Both plans include coverage for accidents like drops and spills, theft and loss protection on eligible products, battery replacement service, and 24/7 support from Apple Experts.

• Apple Upgrade, a leasing program provided by Klarna and available in the U.S., gives eligible customers monthly payment options for Apple Watch Ultra 4, with 12- and 24-month leasing terms starting as low as $24.99 (U.S.) per month for 24 months.