ULTRAHUMAN Ring AIR - Smart Ring | No App Subscription Fee | Size First with Sizing Kit | Sleep, Activity & Heart Rate Tracking | Fitness Ring for Men & Women (Aster Black, 5)

Features

• SLEEP DECODED EVERY NIGHT - YOUR PERSONAL SLEEP TRACKER RING: This smart ring delivers detailed insights into REM, Deep Sleep, Light Sleep, Wakefulness plus sleep debt tracking the most comprehensive sleep monitoring device you can wear on your finger. The Dynamic Recovery Score blends heart rate, HRV, skin temperature to tell you when to push hard or take it easy. Actionable nudges improve your sleep quality every night. A true sleep tracking ring & health ring that works while you rest.
• SIZE FIRST - NO SUBSCRIPTION: ALL features included FREE sleep, activity, stress, HRV, recovery, and more. No hidden fees, ever. Up to 6 days battery life on a single charge outlasts most smart rings. Available in 15+ languages. Grab the Sizing Kit first sizes differ from standard. 10 sizes (514). IN THE BOX: Ring AIR, Wireless Charger, USB-C Cable. Available in 6 colours.
• COMPREHENSIVE HEALTH & FITNESS TRACKING: Track heart rate, HRV, skin temperature, stress, blood oxygen (SpO2), steps, and calories all from your finger. 20+ workout modes with a dedicated cardiovascular insights mode. This fitness tracker ring works as a heart rate monitor, step tracker, step counter, pedometer, activity tracker, health tracker, and sleep ring all in one. The smart ring fitness tracker that replaces your fitness watch. Lighter than a coin.
• WORLD'S LIGHTEST SMART RING - JUST 2.4g: The Ring AIR weighs just 2.4g at only 2.4mm thin the lightest smart ring for men and smart ring for woman in the world. Forged from space-grade titanium with a hypoallergenic smooth inner lining. Water-resistant to 100m (IP68) swim, shower, and train without worry. A wearable smart ring, digital ring, fitness ring for men, health rings for men, and fit ring for men all in one device. Compatible with iOS and Android. No subscription needed.
• WOMEN'S HEALTH & PREGNANCY MODE - THE SMART RING FOR WOMEN LATEST: Track ovulation, menstrual cycles, and pregnancy with multi-biomarker precision. Predict a 7-day fertile window and pinpoint ovulation. Unique Pregnancy Mode delivers trimester-specific insights for expecting mums a feature no other fitness ring for women or smart ring for women offers. This smart ring for woman is built for every phase of a woman's life from cycle tracking to pregnancy and beyond.