Apple Watch Ultra 3

Always-On Retina wide-angle OLED display (up to 3000 nits, LTPO3)
Advanced Health Tracking
Emergency SOS (with satellite), fall/crash detection, siren, international calling
100m Water Resistance
Precision Dual-frequency GPS + Cellular & Satellite connectivity, 5G capable
S10 chip, Siri on device, wrist flick & double tap gestures, Precision Finding for iPhone
Up to 42 hrs (72 hrs Low Power Mode) + fast charging (0–80% in ~45 min; 15 min = 12 hrs)