ULTRAHUMAN Ring AIR Size 7 Aster Black

Purchased: April 2025 Price: $350 Color: Aster Black Size: 7 No issues with the ring, it works great. I no longer wear it due to work.  The Ultrahuman AIR Smart Ring is a lightweight, comfortable smart ring designed to track sleep, recovery, activity, and overall wellness. With up to 6 days of battery life, it provides real-time insights and gentle nudges to help optimize health and performance—no subscription required.  Crafted from space-grade titanium with a tungsten carbide carbon coating, the ring is highly durable and resistant to daily wear. The inner lining features medical-grade hypoallergenic epoxy resin for all-day comfort.  Features include a comprehensive Sleep Index that evaluates sleep duration, resting heart rate, and restfulness; skin temperature tracking to monitor physiological changes; and water resistance up to 330 feet for worry-free swimming. The ring also offers a stimulant window recommender to help optimize caffeine intake, as well as advanced women’s health features, including menstrual cycle tracking and pregnancy insights with personalized biomarker-based scores.