Track your daily wellness and fitness without the distraction of a screen. This lightweight smart bracelet continuously monitors heart rate, heart rate variability, stress, sleep patterns, steps, distance and calories burned, then syncs your data to the free QRing mobile app through Bluetooth.Advanced sleep tracking records both overnight sleep and daytime naps, including deep, light and awake stages. Detailed reports in the app help you review sleep duration, quality and long-term recovery trends.Choose from more than 170 sports and activity modes, including running, cycling, swimming, yoga and basketball. Smart features include call notifications, activity records and remote camera control through a compatible smartphone.Choose from more than 170 sports and activity modes, including running, cycling, swimming, yoga and basketball. Smart features include call notifications, activity records and remote camera control through a compatible smartphone.A built-in 175 mAh rechargeable battery provides up to 45 days of use depending on settings and activity. The 1ATM water-resistant construction helps protect against sweat, rain and everyday splashes. Core tracking features are available through the app without subscription fees. | Core Tech | | Screen-Free Smart Fitness Bracelet with 24/7 Heart Rate, HRV, Stress and Sleep Tracking, 170+ Sports Modes and Two Bands | Black | Best Buy