Performance of the S9 Chip: Allows for new touch-free interaction features and powers a bright display. Carbon Neutral: The Sport Loop and aluminum Apple Watch Series 9 are carbon neutral. Health tracking: Track the stages of sleep (REM, Core, Deep) and blood oxygen levels. Fitness Partner: Training metrics are provided by the workout app for deeper insights. Safety features include emergency SOS for emergencies, crash detection, and fall detection. Smooth Integration: Compatible with Apple products such as the iPhone XS or later. Customizable: To fit your style, select from a variety of bands, colors, and watch faces. Durability: swimproof up to 50 meters, IP6X dust resistant, and resistant to cracking. Keep in touch by using your iPhone or Wi-Fi to send texts, make calls, and listen to music.