Monitor your sleep health and fitness routine with the BodiMetrics CIRCUL Sleep & Fitness Ring Tracker . Get instant access to insightful data so you can take the next steps in your journey toward better health. CIRCUL Ring Features and Benefits: Wearable Pulse Oximetry Tracks Blood Oxygen Level, Apnea-Hypopnea Index (AHI), and Sleep Stages Continuous Measurement of Steps and Heart Rate Activity Medically Approved for Home Oxygen Monitoring Waterproof Capabilities Let You Exercise While Wearing the Tracker Tracks Blood Oxygen Level, Apnea-Hypopnea Index (AHI), and Sleep Stages Using CIRCUL as a sleep tracker ring, you'll wake up with access information and analytics on your AHI and blood oxygenation levels, which helps you understand how your previous night of sleep went without intravenous blood sampling. These simultaneous measurements can inform you if you're at risk for having sleep apnea or if your blood oxygen saturation is at an optimal level while you sleep. By monitoring sleep stages, too, you'll get insight into the quality of your sleep night after night. The CIRCUL ring tracks 4 stages of sleep: Awake, Light Sleep, Deep Sleep, and REM Sleep. Counts Steps and Monitors Heart Rate Activity The CIRCUL Sleep and Fitness Ring gives you the fitness-tracking capabilities of a smartwatch without all the noisy alerts and frequent notifications. The device tracks steps and monitors your heart rate, and instead of being pinged about this data throughout the day, you can simply check the mobile app to chart your progress and view your ongoing analysis. Medically Approved for Home Oxygen Monitoring If you have emphysema or chronic obstructive pulmonary disease (COPD) and need to track your oxygen levels at all times, sleep soundly knowing the CIRCUL has been medically cleared to track these important stats. General Tips Section Warranty and Satisfaction Guarantees Satisfaction Guaranteed: 30 Days Warranty: 1 Year (Parts and Labor for Defective Products) WARNINGS Do not use around open flames. Do not use while undergoing an MRI or while getting a CT scan. Do not sterilize at high temperatures. The Sleep and Fitness Ring isn't for diagnosing any conditions. Swallowing hazard: keep away from small children. Lithium Battery Warning: The CIRCUL Sleep and Fitness Ring uses an internal lithium battery. Do not expose the lithium battery to extreme temperatures (both hot and cold) or damage could occur. First Time Use Tips How to Set Up the Product Slide the CIRCUL Sleep and Fitness Ring onto your finger in the direction of the imprinted arrow, and position it between your second and third knuckles. Fit the ring so that it's firm yet comfortable and doesn't turn easily. From there, you'll need to install the CIRCUL App onto your phone. The CIRCUL App is available on the Google Play Store and the App Store. Follow the instructions on the screen to pair the app with your CIRCUL Ring. Once connected, you'll need to manually turn it on to start tracking your sleep or fitness activity. Once complete, the app will download your data from the ring. Cleaning / Maintenance Tips How to Clean the Product Cleaning should be done gently with alcohol and a soft cloth. Don’t expose the product to acids, harsh chemicals, solvents, or cleaners. O2-33-L,O2-33-S