Ultrahuman Ring Air Naturel Titanium Size 9

Experience the next generation of health and fitness tracking with the Ultrahuman Smart Ring Air in Raw Titanium (Size 9). Engineered from space-grade titanium, this ultra-lightweight and durable ring delivers advanced insights into your sleep, activity, recovery, and overall wellness—all from your finger. The Ultrahuman Ring AIR offers comprehensive sleep analysis, tracking REM, Deep, and Light sleep cycles, plus wake time, and provides actionable tips to improve your energy each day. Stay active effortlessly with the Movement Index, keeping you motivated throughout the day. Log your steps, workouts, and calories burned, and activate Workout Mode to record heart rate during exercise for precision fitness tracking. The Dynamic Recovery Score fuses heart rate (HR), heart rate variability (HRV), and skin temperature to give real-time insights into your readiness for both daily activity and recovery, even monitoring during naps or sauna sessions. Women's health features include tailored cycle-based insights for menstruation, ovulation, follicular, and luteal phases, along with Pregnancy Mode to support expecting mothers. Easily understand stress trends by tracking HR, HRV, and resting heart rate in context with your circadian rhythm. Before purchasing, ensure the perfect fit with the Ultrahuman Sizing Kit. Available in US sizes 5–14, the Ring AIR combines sleek design with uncompromising comfort for all-day, all-night wear—redefining what a fitness tracker can be.