Key features of the Apple Watch Series 9:

• Powerful new S9 SiP: The S9 SiP is a custom-designed Apple chip that makes the Watch Series 9 more capable, intuitive, and faster. It has a new dual-core CPU with 5.6 billion transistors—60% more than the S8 chip—and a new four-core Neural Engine that processes machine learning tasks up to two times faster.
• Advanced health features: The Series 9 has a number of advanced health features, including a new blood sugar sensor, a more accurate heart rate monitor, and an improved sleep tracker. It can also detect if you've been in a serious car crash and automatically connect you with emergency services.
• Always-On Retina display: The Apple Series 9 Watch has an Always-On Retina display that is up to 2,000 nits bright, making it easy to see even in direct sunlight.
• Long battery life: The Watch Series 9 has a battery life of up to 18 hours, so you can wear it all day without having to worry about it running out of power.

In addition to these key features, the Apple Series 9 Watch also has a number of other features, such as:

• GPS and cellular connectivity
• Built-in speakers and microphone
• Digital Crown and haptic feedback
• Water resistance up to 50 meters
• A variety of watch bands and accessories