Ultrahuman Ring AIR – World’s lightest Sleep-Tracking Wearable, HRV, Heart Rate & Temperature Monitoring, Track Sleep, Movement & Recovery, Water Resistant up to 100 m, 6 Days Battery Life

• Sizes: Available in 7 sizes from 6-12
• Lightest wearable: As light as 2.4 grams
• Build to last: Made with the robustness of Fighter Jet grade Titanium & coated with Tungsten Carbide
• Adventures await: Certified IPX8 dust-resistant and water-resistant up to 100m, it's perfect for swimming, surfing, sailing, and deep-sea diving
• Movement Index: Whether you're running, skipping, or jogging, enjoy distraction-free movement while the Ultrahuman Ring seamlessly captures all your vital data, keeping you focused on the path to progress
• Sleep Index: Rise and shine with advanced insights into your slumber! Tracking your sleep quality, so you can wake up refreshed and in the know about your restful nights
• Recovery Score: To push or to rest it out? Gain unprecedented insights into your body's well-being with the Ultrahuman Ring AIR

• Circadian Phase Alignment: The Phase Response Curve (PRC) describes the intricate interplay between a stimulus, such as light exposure, food or exercise mapped to a shift in your body's circadian rhythm
• Ultrahuman Ring AIR X Ultrahuman M1: Say hello to personalised wellness. Explore the synergy of your glucose insights with the insights of the Ultrahuman Ring AIR
• Battery Life: A single charge can last up to 6 days