- 41mm or 45mm case
- Always-On Retina LTPO OLED display, up to 2,000 nits
- Ion-X glass display on aluminium cases; sapphire crystal display on stainless steel cases
- GPS and GPS + Cellular models
- S9 SiP with 64-bit dual-core processor; W3 wireless chip; second-generation Ultra Wideband chip
- Digital Crown with haptic feedback; side button; double tap gesture
- Temperature sensor, blood oxygen sensor; electrical heart sensor and third-generation optical heart sensor
- High and low heart rate notifications, irregular rhythm notification and ECG app; sleep stages
- International emergency calling, Emergency SOS, Crash Detection and Fall Detection
- Water resistant 50 metres
- Dust resistant (IP6X)
- LTE and UMTS, Wi-Fi 4 (80211n) and Bluetooth 5.3
- GPS/GNSS, compass and always-on altimeter
- Built-in speaker and mic
- 64GB capacity
- Fast charge time
