The challenge was to create a bigger display while barely expanding the dimensions of the watch itself. To do so, the display was completely re‑engineered reducing the borders by 40%, allowing for more screen area than both Series 6 and Series 3. Now that’s something to smile about
You don’t need to raise your wrist or touch the screen to see the time or other information and complications on your watch face, because the display is always on. And now, it’s 70% brighter indoors when your wrist is down
Breaking news: Series 7 is the most durable Apple Watch ever built.
Fundamental design changes were needed to achieve the vision of the larger Always-On Retina display. These same innovations also helped make the most crack-resistant front crystal yet.
Measure your blood oxygen. It’s a breathtaking innovation.
 Your blood oxygen level is a key indicator of your overall wellness. It can help you understand how well your body is absorbing oxygen and the amount of oxygen delivered to your body. The remarkable sensor and app in Apple Watch Series 7 allow you to take on-demand readings of your blood oxygen as well as background readings, day and night.
Heart Rate.
It has your heart in mind. Unusually high or low heart rates and irregular heart rhythms (known as arrhythmias) could be signs of a serious condition. But many people don’t recognize the symptoms, so the underlying causes often go undiagnosed. With notifications in the Heart Rate app, Apple Watch Series 7 can check your heart and alert you to these irregularities — so you can take action and consult your doctor.
Dream machine.
 The Sleep app doesn’t just keep track of your sleep. It also helps you create a schedule and a bedtime routine so you can meet your sleep goals. It even tracks your respiratory rate while you’re sleeping. How refreshing.
Stay centered. Move ahead.
 Taking a moment throughout the day to pause and breathe can reduce stress. The new Reflect feature in the Mindfulness app helps you set an intention and center yourself with a beautiful animation. And new audio and video guided meditations in Apple Fitness+ focus on improving your overall wellbeing with specific themes such as calm, gratitude, or kindness.
