Ultrahuman Ring AIR Size 13 - World’s Lightest Sleep-Tracking Wearable - Raw Titanium (No Monthly Subscription)

Introducing the Ultrahuman Ring AIR, the ultra-comfortable fitness wearable. With its notch-less, ultra-thin design and smooth inner shell, the Ring AIR offers unparalleled comfort day and night. It excels in sleep tracking, providing a comfortable and unobtrusive experience. Weighing just 2.4 grams, it is the lightest smart ring on the market. This sleek device combines minimalism with precise performance, allowing users to effortlessly monitor sleep, movement, heart rate, heart rate variability, and skin temperature.

• SIZE FIRST - Ultrahuman Ring sizes are different from standard ring sizes. Purchase Ultrahuman Sizing Kit first to get the perfect Ring AIR size. Ring AIR is available in 10 sizes from 5-14.
• THE RING OF YOUR DREAMS - Ultrahuman Ring AIR is the perfect sleep tracker ring. Along with insights on all your sleep stages — REM, Deep Sleep, Light Sleep and Wakefulness, get actionable steps to improve sleep so you're ready for the day.
• HSA/FSA ELIGIBLE - Ring AIR is HSA/FSA eligible, making it easier to invest in your health.
• DESIGNED TO KEEP YOU MOVING - The 'Movement Index' is designed to increase your non-exercise energy usage through the day. With this all-in-one activity and fitness tracker, you can track steps, workouts and calories for insights into your all-day activity. All features work together seamlessly, to make sure you get the most out of the smart ring. Workout Tracking is now easy, with a dedicated Workout Mode that tracks Heart Rate during workouts — you can get insights into your cardiovascular response, track intensity levels, and make informed decisions to improve your fitness outcomes.
• ONE APP, NO SUBSCRIPTION: Enjoy all the essential standard features of the Ultrahuman Ring, including sleep, activity, stress, heart rate, heart rate variability, skin temperature and recovery with no subscription — on the Ultrahuman App.