• Series 10 has the largest screen area of any Apple Watch. It has up to 75% more screen area than Series 3 and up to 30% more screen area than Series 4, 5, 6 and SE. So you can see and do even more
• From sleep tracking to heart health notifications and much more, the advanced sensors in Series 10 help you better understand your health
• Sleep on it. Get help setting up a bedtime routine and tracking your sleep. See the time you spent in REM, Core and Deep sleep, as well as when you might have woken up. You can even get 8 hours of sleep tracking with just an 8-minute charge
• New Vitals app helps you identify changes in your daily health status.6 Quickly see your key overnight health metrics right on your wrist — including blood oxygen18, heart rate, respiratory rate, wrist temperature7 and sleep duration
• Apple Watch has an innovative sensor that tracks your temperature while you sleep.7 The Cycle Tracking app uses this data to provide a retrospective estimate of when you likely ovulated, which can be helpful for family planning

Life is full of the unexpected. That’s why Apple Watch is there to call for help when you need it most. And now it can let someone know when you’ve safely made it to a destination. Need help? Apple Watch has your back. Just press and hold the side button to call emergency services and share your location. Apple Watch can automatically detect if you’ve taken a hard fall or been in a severe car crash. If you need help, it will call emergency services, share your location and notify your emergency contacts.Check In notifies someone when you arrive at a destination. If you’re going for a run after dark, you can start a Check In for the duration of your workout to automatically notify a friend when you’re done. What matters to you matters to Apple too. From using more recycled materials that minimise environmental impact. To privacy protections that give you more control over your data. To creating built–in features that make Apple Watch accessible to all.