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The Ultrahuman Ring AIR is the World’s Lightest Smart Ring that accurately measures your Sleep, HRV, Movement, and Temperature, with insights to help you improve your health every day. The Ring lasts 4-6 days on a complete charge.

• SIZE FIRST - First shipment includes a Ring AIR Sizing Kit. Ultrahuman Ring sizes are different from standard ring sizes. Use a Ring sizing kit first and select the perfect Ring AIR size for you. Ring AIR is available in 10 sizes from 5-14.
• Select size of Ring AIR in app upon arrival of sizing kit; ring ships separately following ring size confirmation. Second shipment includes the Ring AIR, Type-C to Type-C charging cable, and charging dock; wall adapter not included
• 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.
• WOMEN’S HEALTH - Ring AIR comes with cutting-edge capabilities tailored for women's health, providing personalized insights into each phase of the menstrual cycle by correlating it with various biomarkers. Additionally, it offers pregnancy insights designed for expecting mothers, enabling them to seamlessly track their biomarkers' correlation with trimester progression through individually tailored scores.
• POWERPLUGS - These micro-experiences are designed for highly personalized health insights that enable you to choose and focus on the aspects of your health that matter most.
• SLEEP DEBT - Enables you to consistently monitor and manage your cumulative sleep deficiency
• SCREENTIME - Take control of your screen time for a healthier, more balanced lifestyle
• INSIDE THE AIR - Boasting a smooth hypoallergenic inner shell and constructed with Space-Grade Titanium, Ring AIR comes with up to 6 days of battery life, wireless charging, and water resistance up to 100 m.
• NO APP SUBSCRIPTION
• Product Dimensions: 0.99 x 0.99 x 0.32 inches
• Item Weight: 0.104 ounces