Action button
    Digital Crown with haptic feedback
    Side button
    Dual speakers
    Three-microphone array
    S8 SiP with 64-bit dual-core processor

Display:
    Always-On Retina LTPO OLED
    Flat sapphire crystal display
    Up to 2000 nits brightness

Sensors:
    Depth gauge ±1m accuracy
    Water temperature sensor
    Temperature sensing
    Blood oxygen sensor and app
    Electrical heart sensor and ECG app
    Third-generation optical heart sensor
    High and low heart rate notifications
    Irregular rhythm notification
    Compass
    Always-on altimeter

Safety:
    Emergency SOS
    International emergency calling
    Siren
    Crash Detection
    Fall Detection

Splash, Water, and Dust Resistance:
    Water resistance 100m
    Dust resistance IP6X
    EN13319 recreational scuba diving to 40m
    Tested to MIL-STD 810H: altitude, high temperature, low temperature, temperature shock, immersion, freeze with thaw, ice and freezing rain, and shock and vibration.



 Connectivity and Communication:
        Precision dual-frequency GNSS: GPS, GNSS, Galileo, BeiDou
        LTE and UMTS
        802.11b/g/n 2.4GHz and 5GHz
        Bluetooth 5.3
        U1 chip (Ultra Wideband)14

 Storage Capacity:
        32GB

 Environmental Requirements:
        On-wrist operating temperature: —⁠4°F to 130°F (—20°C to 55°C)15
        Operational temperature (boot/charge): 32°F to 95°F (0°C to 35°C)15
        Nonoperational storage temperature: 4°F to 113°F (—20°C to 45°C)15
        Dive operating temperature: 32°F to 104°F (0°C to 40°C)15
        Relative humidity: 5% to 90% noncondensing15