HRV? Check. Heart rate variability, or HRV, is an indicator of how your body responds to stress and recovery. Overtraining or poor sleep can raise your stress and lower your HRV. With the most accurate heart rate sensing in a wearable,2 Apple Watch Ultra 4 measures HRV as often as every five minutes and takes background heart rate readings every five seconds — the most frequent sensing ever for Apple Watch. And with the updated Heart Rate app and new watch face complications, you can easily view your readings anytime.
60xmore frequent background heart rate readings than Ultra 3
24xmore frequent HRV readings than Ultra 3
Run circles around your data.
Ultra 4 goes the extra mile to ensure that you can precisely track and analyze your running workouts. With real‑time metrics, deeper insights into training and performance, and personalized encouragement, you’ll be motivated to hit your goals like never before.
Extreme staying power.
With optimized, more efficient workout algorithms, Ultra 4 delivers even longer battery life. While providing up to 50 hours of everyday battery use,7 it now gives you up to 18 hours of standard workout tracking and up to 45 hours of Max Extended Workout tracking — enough time to complete a 100‑mile race.1
Boost your performance with a body of metrics.
The more health insights you have, the more empowered you are to take actions that will optimize how you perform. With in-depth clinical validation and FDA-cleared features, Apple Watch Ultra 4 provides a fuller picture of your health, so you can stay informed.
Coming late 2026 Redesigned Health app. Your present and future. On tap.
With Apple Intelligence at its core, the redesigned Health app transforms your health and fitness data into proactive insights delivering a whole new view of your health — today and over time.3 Featuring groundbreaking privacy protections, your personalized hub securely brings together data from your Apple Watch and synced medical records. And since the Health app adapts to you, you’ll get a real-time read on your health and longevity.
Insights
Tap into the Insights tab for a quick look at daily metrics and trends in your heart, sleep, fitness, vitals, readiness, and cycle tracking. Apple Intelligence makes sense of your daily habits and offers personalized guidance, like tips on how to improve your sleep routine.4 It’s all about you — right here, right now.
Health Age
Health Age shows you exactly which factors are adding years and which ones are taking them off. With combined data from your Apple Watch like VO2 max, HRV, and sleep, you’ll learn what’s affecting your Health Age and how to improve it. You can even add biometrics from your blood work for deeper insights.3
Longevity
The Longevity tab turns metrics from your Apple Watch and iPhone into helpful analytics that build a foundation for a healthier future. Explore categories like heart health, sleep, and movement to get a clear read on your health. Unlock personal insights by taking in-depth physical assessments at home. The more you understand your health, the better you can take care of it.
Personalized guidance
Personalization is built into every part of the Health app, so you always know where you stand and how to improve. Get timely, personalized guidance powered by Apple Intelligence, like a suggestion to boost your cardio by adding intervals to your morning run. And helpful videos and articles explain the results of your physical assessments with your data layered in so you can better understand your health. It’s expert insight, made personal.4
More Sports
Ultraversatile.
Apple Watch Ultra 4 ups your game in every sport. When you’re cycling, it actively monitors your speed and efficiency so you can see your progress in real time. And in the water, it can track your sets as you swim, automatically detect stroke patterns, and calculate your total distance. Time to clock your best.
Adventure
Geared to go farther.
Hiking to new heights and diving to new depths requires specialized tools. Apple Watch Ultra 4 has pioneering features like a powerful compass and a full dive computer, so you can pack light and still be equipped for every expedition.
Get help with Emergency SOS via satellite.
With a few simple taps, Ultra 4 can gather critical information, connect you to a satellite, and reach out to emergency services, so you can get the assistance you need as quickly as possible.24
Fall Detection at the ready.
If Ultra 4 detects that you’ve taken a hard fall, it can automatically help connect you with emergency services, provide dispatchers with your location, and notify loved ones.24
Crash Detection. Your guardian on the go.
If you’ve been in a severe car crash, Ultra 4 can automatically help call emergency services, share your location, and notify your emergency contacts.24
Activate a siren.
If you need to attract attention when you’re lost or injured, hold down the Action button to activate a siren that can be heard up to 600 feet or 180 meters away.
Stay connected and safe with Messages.
Use Messages via satellite to stay in touch or contact emergency services wherever you are. You can also send and receive texts, emoji, and Tapbacks via iMessage or use SMS.6
Be found with Find My.
Use Find My to share your location via satellite so friends and family know where you are. Before you go off grid, add the contacts you plan to share your location with using your paired iPhone or Ultra 4.6
Let there be flashlight.
Illuminate nearby objects, alert others when you’re running at night, or shine a light in a campsite. You can also customize the Action button to control it.
Set up your Medical ID.
In an emergency, first responders are able to quickly access critical medical information — like allergies or medications — directly from your Ultra 4.
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New Apple Watch
Ultra 4
- Natural titanium
- Black titanium
- +more
The ultimate sports and adventure watch.
Currently viewing, Apple Watch Ultra 4
49mm titanium case
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Wide-angle Always-On Retina display
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Up to 3000 nits
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New Apple Watch Series 12
- Aluminum dark bronze
- Aluminum light gold
- Aluminum black
- Aluminum space gray
- Titanium radiant gold
- Titanium natural
- Ceramic pearl white
- Ceramic night blue
- +more
The ultimate way to
watch your health.
46mm or 42mm aluminum, titanium, or ceramic case
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Wide-angle Always-On Retina display
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Up to 2000 nits
