Apple Watch Ultra 4  

The ultimate watch for sports and adventure.

Apple Watch Ultra 4 is the ultimate running and sports watch, with multi-day battery life2, next-level health and fitness tracking, and high-frequency HRV measurements for insights into stress, recovery, and your Readiness.

• MULTI-DAY BATTERY LIFE — Ultra 4 is a smartwatch with enough battery life for an ultramarathon.2 With up to 45 hours of maximally extended workout tracking, it is ideal for long-distance running.3 And just 15 minutes of fast charging provides up to 18 hours of battery life.4
• KEEP AN EYE ON YOUR HEART HEALTH — With the most accurate heart rate measurement in a wearable1, Ultra 4 now measures HRV every five minutes for insights into stress and recovery. It also measures your heart rate in the background every five seconds.
• A FULL-FEATURED HEALTH TRACKER — Understand your body better with advanced insights into your health. View your overnight health data in the Vitals app5 and get a sleep score every day. Track your cycle6 and measure your blood oxygen7.
• GET INSIGHTS INTO YOUR READINESS — Know when it is time to take it easy or go for a new personal best. The Readiness feature gives you a clear score to help assess your performance capacity for the day by analyzing your recent activity, vitals, and sleep.
• THE ULTIMATE RUNNING AND WORKOUT COMPANION — An advanced fitness tracker for distance running, triathlons, mountain biking, strength training, and more. Ultra 4 features precision dual-frequency GPS, Pacer, heart rate zones, custom workouts, training load, and more.
• HELP, ALWAYS CLOSE AT HAND — A smartwatch that puts your safety first. Ultra 4 can detect if you have taken a hard fall or been in a car crash.8 If you need help but do not have cellular or Wi-Fi coverage, built-in satellite communications let you text emergency services.9
• RUGGED AND READY FOR ANYTHING — Ultra 4 is built for extreme environments, with a strong titanium case and a durable sapphire crystal display. This smartwatch is water resistant to 100 meters and is ideal for swimming, diving, and high-speed water sports.10
• ·FREEDOM CALLS — Make calls, stream music or podcasts, and listen on your AirPods using only your smartwatch. No iPhone required.9

Technical Specifications

For a complete list, visit apple.com/de/watch/compare.
 

Legal Notices

Depending on which copy block is used, the footnotes must be renumbered.

Apple Watch Ultra 4 requires iPhone 11 or later with iOS 27 or later.

¹Based on an Apple-conducted study of heart rate measurement accuracy, August 2026. Learn more at apple.com/de/HRAccuracy.

²Battery life varies by use and configuration. Learn more at apple.com/de/watch/battery.

³Workouts were tested without iPhone and with the heart rate sensor enabled during outdoor running workouts. During extended workout tracking, Low Power Mode is enabled over the course of the workout. Running form metrics are unavailable. During maximally extended workout tracking, Low Power Mode is enabled over the course of the workout. Notifications and splits are disabled and certain workout data is unavailable. Testing conducted by Apple in July and August 2026 using preproduction Apple Watch Ultra 4. All devices were tested with preproduction software. Battery life varies by use, configuration, cellular network, signal strength, and many other factors. Actual results will vary.

⁴Testing conducted by Apple in July and August 2026 using preproduction Apple Watch Ultra 4 paired with an iPhone; all devices were tested with preproduction software, Apple Watch Magnetic Fast Charger to USB-C Cable (Model A3277), and Apple 20W USB-C Power Adapter (Model A2305). Charge time varies with power adapter, region, settings, initial battery level, usage, and environmental factors. Actual results will vary.

⁵The Vitals app is intended for wellness use only and not for medical purposes.

⁶The Cycle Tracking app should not be used as a method of birth control or to diagnose a medical condition. Notifications for cycle deviations, including perimenopause, are intended for people age 40 and older.

⁷The Blood Oxygen app is intended for wellness use only and not for medical purposes. Measurements are calculated on iPhone and displayed in the Health app. The Blood Oxygen app is available on Apple Watch Series 6 and later (excluding Apple Watch SE models) and on all Apple Watch Ultra models.

⁸Emergency SOS requires a satellite connection, a cellular connection, or Wi-Fi Calling with an internet connection from your Apple Watch or nearby iPhone. You can make an emergency call in many locations with cellular Apple Watch models, provided cellular service is available. Some cellular networks may not accept an emergency call from your Apple Watch if your Apple Watch is not activated, is incompatible with or not configured to operate on a particular cellular network, has not been set up for cellular service, or the cellular network does not support emergency calling over IMS. Learn more at support.apple.com/de-de/108374 and apple.com/de/watch/cellular.

⁹Emergency SOS and Find My via satellite are free for two years after activation of Apple Watch Ultra 3 or later. Connection and response times vary based on location, site conditions, and other factors. Find My via satellite requires a wireless service plan. Satellite connectivity is provided by Globalstar and its affiliates. Learn more at support.apple.com/de-de/123924.

¹⁰Apple Watch Series 2 and later and Apple Watch SE and later have a water resistance rating of 50 meters under ISO standard 22810:2010. This means they may be used for shallow-water activities like swimming in a pool or ocean. Series 10 and later may also be used for snorkeling to 6 meters. They should not be used for scuba diving, waterskiing, or other activities involving high-velocity water. Apple Watch Ultra models have a water resistance rating of 100 meters under ISO standard 22810:2010. They may be used for recreational scuba diving (with a compatible third-party app from the App Store) to 40 meters and for high-speed water sports. They should not be used below 40 meters. Water resistance is not a permanent condition and can diminish over time. Learn more at support.apple.com/de-de/109522. Apple Watch Series 8 and later and Apple Watch Ultra models are rated IP6X dust resistant.

¹¹A wireless service plan is required for cellular service. Contact your service provider for more details. Connection may vary based on network availability. See apple.com/de/watch/cellular for participating wireless carriers and eligibility. Additional setup instructions are available at support.apple.com/de-de/HT207578.