- 41mm or 45mm case size
- 1.7mm thin borders
- 20% larger display than Series 6
- 50% larger display than Series 3
- Slimmer design with a more rounded corner
- New larger 47mm and 51mm case sizes (new)
- Electrical heart sensor
- ECG app
- Blood Oxygen sensor
- Third-generation optical heart sensor
- Accelerometer (up to 32 g-forces with fall detection)
- Gyroscope
- Ambient light sensor
- Temperature sensor
- Crash detection sensor
- New advanced health sensors (new)
- Blood Oxygen app
- ECG app
- Heart rate notifications
- Irregular heart rhythm notification
- Fall detection and emergency SOS
- Sleep tracking
- Workout tracking
- Menstrual cycle tracking
- Medication tracking
- New health and wellness features (new)
- LTE and UMTS (GPS + Cellular models)
- Wi-Fi (802.11b/g/n 2.4GHz and 5GHz)
- Bluetooth 5.3
- GPS, GLONASS, Galileo, and QZSS
- New advanced connectivity features (new)
- Cellular connection for Emergency SOS (GPS + Cellular)
- International emergency calling (GPS + Cellular)
- Wi-Fi Calling (Apple Watch without cellular)
- Up to 18 hours
- Faster charging (33% faster, 8 minutes for 8 hours of sleep tracking)
- Low Power Mode
- New advanced battery management (new)
- 50 meters under ISO standard 22810:2010
- Suitable for shallow-water activities like swimming in a pool or ocean
- Aluminum:
- Midnight
- Starlight
- Silver
- Product (RED)
- Blue
- New colors (new)
- Stainless Steel:
- Gold
- Graphite
- Silver
- Titanium:
- Space Black
- Titanium
- New colors and finishes (new)
- Always-on display
- Full on-screen keyboard with QuickPath entry
- Larger buttons in some apps
- New watch faces (Contour, Modular Duo, Bounce, Metropolitan, new faces)
- Compatible with older Apple Watch bands
- New Sport and Solo Loop colors, Nike and Hermès bands
- watchOS 10 operating system (new)
- New features and improvements (new)