ULTRAHUMAN Ring AIR - No App Subscription - Smart Ring - Size First with Sizing Kit - Track Sleep, Movement & Recovery Score, Workouts, HR, HRV - Up to 6 Days Battery (Size 10)

Features

• SIZE FIRST BEFORE YOU BUY - Ultrahuman Ring sizes are different from standard ring sizes. Purchase a Ring sizing kit first, wear it overnight, and purchase the perfect Ring AIR size for you. Ring AIR is available in 10 sizes from 5-14.
• SLEEP INDEX - Derived to help you understand the various sleep stages, such as Deep Sleep, REM Sleep, Light Sleep, and being Awake, Ring AIR will help you understand the different metabolic processes of the body that occur for growth, repair, restoration, and maintenance. Intelligently designed to be your sole metric for sleep health, it assesses your total sleep duration, resting heart rate, and restfulness, creating a comprehensive picture of your sleep quality.
• MOVEMENT INDEX - With the right nudges and biofeedback, it helps you stay active and optimize for better cardiovascular functioning. Developed to help you get in more movement, more often, Ring AIR also helps you track your steps, calories, and workouts.
• RECOVERY SCORE - Get insights into various recovery signals your body sends throughout the day, enabling a deeper comprehension of its needs. It is derived from a blend of key metrics, including Heart Rate Variability (HRV) and Skin Temperature, interpreting the signals your body sends and enabling you to monitor your overall well-being.
• WORKOUT TRACKING - The Ultrahuman Ring AIR has a dedicated 'Workout Mode' that tracks various activities, giving you deeper insight into your overall workout metrics. By tracking heart rate during workouts, you can gain insights into your cardiovascular response, track intensity levels, and make informed decisions to improve your fitness outcomes.
• STIMULANT WINDOW RECOMMENDER - A game-changer for all caffeine enthusiasts, this capability helps you make smarter choices about your stimulant consumption. Break down your day into favorable times in which you can consume stimulants to enhance your productivity.
• CIRCADIAN PHASE ALIGNMENT - Geek out on various insights, such as temperature minima, align your lifestyle, and optimize your sleep-wake cycle for improved cognitive function, energy levels, and hormone balance, with timely, actionable nudges for sunlight exposure and movement to shift your sleep schedule earlier.