Ultrahuman Ring Air- Size-09- Matt Grey

Powerful light. Amazingly slim.

Weighs just 2.4 grams. 11 times lighter than a typical smartwatch.

Only 2.4 mm thick. Discreet design for everyday use.

The most comfortable wearable technology in the world.

Glides with you through the day and feels lighter than air. It's there when you need it, and invisible when you don't. Its form is so discreet that it's easy to forget you're wearing it, but hard to ignore its capabilities.

Wake up with your sleep analyses. The sleep index, intelligently designed as your sole measure of sleep health, evaluates your total sleep duration, resting heart rate, and recovery, creating a comprehensive picture of your sleep quality.

Temperature monitoring made easy. Skin temperature is crucial for measuring your body's physiological states and responses to various factors, including exercise, stress, and illness.

Listen to your inner clock. The phase response curve describes the complex interplay between a stimulus, such as light, food, or movement, and a shift in your circadian rhythm.

Towards a more active you. The movement index is designed to keep you moving to ensure optimal glucose utilization and increase your energy expenditure outside of sports.

Maximize recovery with key HRV insights. The correlation between HRV and recovery is essential for understanding your body's recovery capabilities and its readiness for a new day.

The only nudges you need. Personalized nudges for a healthier you. Receive tailored insights and alerts that help you make better decisions in real-time.