Apple Watch Series 4
Apple Watch
- 40mm or 44mm case
- Retina LTPO OLED display, up to 1000 nits
- Ion-X glass display on aluminum cases; sapphire crystal display on stainless steel cases
- GPS and GPS + Cellular models
- S4 SiP with 64-bit dual-core processor; W3 wireless chip
- Digital Crown with haptic feedback
- Electrical heart sensor and second-generation optical heart sensor
- High and low heart rate notifications, irregular rhythm notification, and ECG app; sleep stages
- Emergency SOSÂ and Fall Detection
- Water resistant 50 meters
- LTE and UMTS, Wi-Fi, and Bluetooth 5.0
- GPS/GNSS and barometric altimeter
- Built-in speaker and mic
- 16GB capacity
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