Ultrahuman Ring AIR No Smart ring activity tracker Titanium

<b>Mighty Light. Amazingly Sleek.</b><br><br>2.4 gms light. 11x lighter than a typical smartwatch.<br><br>2.4 mm sleek. Discreet design for everyday use.<br><br><b>Worlds most comfortable wearable</b><br><br>Glides with you through your day feeling lighter than air. Its there when you need it and invisible when you dont.<br><br>Form factor so discreet its easy to forget youre wearing it but hard to ignore its capabilities.<br><br><b>Wake up to your sleep insights</b><br>The Sleep Index intelligently designed to be your sole metric for sleep health assesses your total sleep duration resting heart rate and restfulness creating a comprehensive picture of your sleep quality.<br><br><b>Temperature tracking made easy</b><br>Skin temperature is vital for measuring your body's physiological states and responses to various factors including exercise stress and illness.<br><br><b>Listen to your body clock</b><br>The Phase Response Curve (PRC) describes the intricate interplay between a stimulus