Oura makes a medical-grade wearable ring free from the harsh plastics and high EMF concerns of conventional fitness trackers, built from aircraft-grade titanium in a hypoallergenic design with no exposed metal alloys that can cause skin reactions. Its sensors track sleep stages, heart rate variability, body temperature, and recovery with research-grade accuracy. Our go-to for the most accurate wearables for understanding sleep, recovery, and your hormone-drive menstrual cycles.
