World’s Lightest Sleep Tracking WearableMeticulously designed for enhanced comfort, the Ring AIR combines minimal form factor with precise performance, enabling users to effortlessly monitor key health indicators all in one integrated app with no subscription. Actionable health trackingWith the Ring AIR's advanced sensors and seamless integration with the Ultrahuman app, you can measure and optimize your health, movement, recovery, and sleep like never before.Accurately measures your sleep, movement, stress, recovery and temperature, with insights to help you improve your health every day. Ultrahuman Ring AIR is available in 10 sizes, from 5-14. Battery life up to 6 days. Water resistant up to 100m. Made from Space-Grade Titanium. Sleep IndexGet a deeper understanding of your sleep quality and quantity through metrics such as sleep duration, RHR, restfulness, sleep stages such as REM, Deep and Light sleep. Movement IndexThe Movement Index is designed to keep you moving for optimum glucose metabolism and to increase your non-exercise energy usage. Track steps, workout, and calories for insights into your all-day movement. Stress RhythmA novel capability that helps you decode stress. This score considers the variations in your Heart Rate (HR), Heart Rate Variability (HRV), and Resting Heart Rate (RHR) against the backdrop of your circadian rhythm. It tells you if you're 'stimulated', 'relaxed', or 'stressed'. Dynamic RecoveryA phenomenal new way to understand your body’s readiness to take on activity load and stress, Dynamic Recovery understands when your body needs to recover. Not just that, it also provides recommendations that help you improve, and adapts your score when you action these recommendations. Smart GoalsSmart Goals empower you to navigate your health journey with precision and personalisation. It helps you master key indicators such as your sleep and wake timings, movement throughout the day, active minutes, sleep duration and much more. Breathwork ModeWith Ring AIR's 17+ breathing protocols, you can harness the power of your breath and regulate your nervous system. Workout ModeBy tracking heart rate during workouts, you get access to insights into your cardiovascular response, track intensity levels, and make informed decisions to improve your fitness outcomes. Integrations with HealthConnect and HealthKitWith the integration of Apple HealthKit and Android Health Connect, you will have access to more data-sharing capabilities including sleep, steps, calories burnt, and standing hours.\ Introducing Power PlugsPowerPlugs is a platform for individual apps and plugins built on top of Ultrahuman’s health and wellness data stack. Recognizing that your health journey is unique, PowerPlugs enable you to choose and focus on the aspects of your health that matter most. It’s designed for highly personalized health insights, ensuring that you can personalize health tracking to your unique needs and goals. Women’s HealthPersonalized multi-biomarker-based health insights for every stage of the unique journey of womanhood, helping you be more in tune with your body, and take charge of your reproductive health. Key Features Sleep IndexMovement IndexStress RhythmDynamic RecoverySmart GoalsBreathwork ModeWorkout ModeIntegration with HealthConnectand HealthKit Technical SpecificationsMaterialsPVD coatingDurable titaniumWater resistant up to 100m/328 ftNon-allergenic, non-metallic, seamless inner molding ConnectivityEMF-safeBluetooth Low EnergyAutomatic firmware updates via Ultrahuman App Sensors6DOF Motion sensorPhotoplethysmography (PPG) sensor (For HR and blood oxygen)Skin temperature sensor (Far infrared sensor) Battery & PowerUp to 6 days of battery life Other Key SpecificationsOperating temp: -5 to 50°CBLE transmission power: 0 dBm (1mW) BLE frequency: 2402 to 2480MHz