Case Size: 41mm Case Thickness: 10.7mm Display: Always-On Retina display Nearly 20% more screen area than Apple Watch SE and over 50% more screen area than Series 3 Processor: S7 with 64-bit dual-core processor; up to 20% faster than SE Optical Heart Sensor: Third-generation optical...
Battery type: Lithium-polymer Charge time: (10-80%): Approximately 40 minutes Fast charging: 1 day of battery life in 12 minutes Radio transceiver: Bluetooth® Built-in GPS + GLONASS Red and infrared sensors for oxygen saturation (SpO2) monitoring 3-axis accelerometer Altimeter Wi-Fi (802.11b/g/n...
Retina display over 30% larger than Series 3
High and low heart rate notifications
Irregular heart rhythm notification
International emergency calling
Family Setup — pair multiple
watches with one iPhone