Lynx Smart Ring with Sleep & Activity Tracking – Silver

The RENPHO Lynx Smart Ring is a titanium fitness and sleep tracker designed for comfortable 24/7 wear. It monitors sleep stages, blood oxygen levels, stress, heart rate, steps, distance, and calories burned, and connects to the RENPHO Health app on iOS and Android with no subscription fees. With 5ATM water resistance, a 7-day battery life, and an included charging case for extra power and safe storage, it provides precise health insights at your fingertip at home, at work, or on the go.