USED LIBRO NURU LIB-A150H smart bracelet for health and fitness tracking, screenless design and comfortable for 24/7 use. Specifications and Features: * Screenless and very lightweight design. * 24/7 heart rate monitoring. * Blood oxygen measurement SpO2. * Tracks and analyzes sleep quality and stages. * Monitors stress levels. * Supports over 100 sports modes. * Battery life up to 40 days depending on usage. * IP68 water resistance. * Works with iPhone and Android via the Libro app. * Displays health data, activity, and statistics through the app. * Suitable for daily use, sports, and monitoring sleep and health without the disturbance of a screen or continuous notifications. * Designed for general health indicator monitoring and is not a medical device. Color: Black Condition: Used – Like New Compatible with Woop bracelet and without subscription, and also fits Woop bracelet bands. Condition: Used