The Ultrahuman Ring Air Smartring, Size 14, Brushed Rose Gold, is a discreet yet powerful health monitoring center that delivers advanced data on sleep, recovery, and physical activity, right from your fingertip. This lightweight and stylish ring uses medical-grade sensors to help you optimize every aspect of your life, from a good night's rest to peak daytime productivity. Smartring Benefits: - Detailed Sleep Analysis: You get a Sleep Index on a scale of 1-100, based on sleep stages (REM, deep, light), body temperature, and calmness level, helping you understand and improve the quality of your rest. - Continuous Recovery Monitoring (HRV): The ring tracks your Heart Rate Variability (HRV) 24/7, providing information on stress levels and your body's readiness for intense training (Dynamic Recovery). - Productivity Optimization: The Caffeine Window feature suggests the ideal times to consume caffeine to maximize your energy throughout the day without disrupting your night's sleep. Comprehensive Women's Health Monitoring: Allows precise tracking of your menstrual cycle, fertile days, and ovulation based on changes in body temperature and heart rate. Discreet and Comfortable: The ring is exceptionally lightweight (weighing just 2.4 grams) and discreet, offering smartwatch functionality in the form of elegant jewelry you can wear around the clock. Advanced Sleep and Recovery Monitoring: The Ultrahuman Ring Air utilizes advanced sensors, including a PPG sensor with red, green, and infrared diodes, to provide medical-grade data. Every morning, you'll receive a detailed sleep assessment, including sleep efficiency, duration of individual sleep phases, and nighttime body temperature. The Dynamic Recovery system goes a step further, analyzing key physiological parameters to determine your readiness for exercise—an ideal tool for athletes and those consciously trying to avoid overtraining. 24/7 Holistic Health Support: Smartring isn't limited to sleep monitoring; it's a 24/7 health assistant. Continuous tracking of your heart rate and blood oxygen saturation (SpO2) allows for early detection of irregularities, including symptoms of atrial fibrillation. A non-contact skin temperature sensor monitors subtle changes that may indicate illness, high stress levels, or hormonal changes. With Phase Alignment, the ring also helps synchronize your circadian rhythm by optimizing light exposure, meals, and activity, maximizing your productivity and overall well-being. Design and Durability: The Ring Air combines advanced technology with a minimalist design. The ring is made of durable, skin-friendly materials. Its lightweight design allows for comfortable wear day and night. All data is presented in a mobile app available in Polish, ensuring ease of use and interpretation. It's the perfect blend of form and function for those seeking a deeper understanding of their body.