Apple's custom silicon makes the Apple Watch Series 9 more capable, intuitive, and faster. The new dual-core CPU features 5.6 billion transistors - 60 percent more than the S8 chip. A new quad-core Neural Engine processes machine learning tasks up to twice as fast.

It enables a range of innovations, including a new gesture - double tap.

The advanced display system of the series 9 increases the maximum brightness to 2000 nits - twice that of series 8 - making it easier to read in full sunlight conditions. It is also better in low light conditions, such as in movie theaters, because it dims to just 1 nit.

A second-generation Ultra Wideband chip enables new integration with the HomePod. When music is playing, the Apple Watch Series 9 opens the Now Playing screen so you can control it. If nothing is playing, the Smart Stack will offer media suggestions for playback on the HomePod.

The watchOS 10 update brings more to your screen than ever before. Almost every app has been completely redesigned to provide you with more information at a glance. From any watch face, simply turn the Digital Crown to reveal the Smart Stack with widgets for relevant and timely information. And now with mental health and vision information, you can monitor your body and mind - directly from your wrist.

The Apple Watch helps you better understand your mental and physical health. Health data is kept private and secure. And when you're ready to share it with a healthcare provider, friends, or family members, you have control.

• Monitors your heart
• Measure blood oxygen
• Sleep tracking
• Cycle Tracking sensor for women
• Mindfulness app for recording daily mood

Take a call. Reply to a message during your commute. Check a notification in the garden. Don't have a phone? No problem.

Pay hands-free in an instant, almost anywhere with Apple Pay. Or simply send money to a friend with Apple Cash.

From strength training and HIIT to pilates and meditation, the Apple Watch offers a healthy number of fitness options - with the metrics you want to see.

The screen allows you to see all the metrics you need, including heart rate zones and custom intervals in a single view while you exercise. Just turn the digital crown for metrics such as segments and intervals, altitude, and activity rings.

Stay motivated with real-time metrics from the Apple Watch. Choose from 12 types of workouts, from HIIT to yoga, as well as meditations. Take walks and runs with audio guidance using just your watch and Bluetooth headphones. Now with Custom Plans automatically created just for you.

The Apple Watch Series 9 is capable of detecting if you are in a severe car accident. When a severe accident is detected, it can automatically connect you to emergency services, provide dispatchers with your location, and notify your emergency contacts.

When you make a call with Emergency SOS, your Apple Watch calls local emergency services and shares your location. Get help by pressing and holding the side button.