ULTRAHUMAN Ring AIR (Certified Renewed) – Smart Ring Health Tracker, Sleep Tracker, Smart Ring for Men/Women, Fitness Tracker (Sizing Kit, Sizing Kit)

CERTIFIED RENEWED BY ULTRAHUMAN: Each Certified Renewed Ring AIR undergoes professional inspection and testing to meet Ultrahuman's performance standards. The ring may feature a unique visual signature due to the manufacturing process, making no two rings look identical. Enjoy your Certified Renewed Ring AIR with confidence, backed by a 1-year manufacturer warranty.

To Claim warranty reach out to the customer support via Ultrahuman app and share the amazon invoice, rest all will be taken care of.

BUY THE SIZING KIT FIRST: Ultrahuman Ring sizes differ from standard ring sizes. Purchase the Ultrahuman Sizing Kit first, which includes a ring sizer, to accurately determine your size. The Ring AIR is available in 10 sizes (5-14), ensuring a comfortable, secure fit. Using the sizing kit helps you avoid returns and exchanges, ensuring you select the right size before purchasing.

COMPREHENSIVE HEALTH TRACKING: The Ultrahuman Ring measures a wide range of metrics including sleep, activity, stress, heart health, movement, workouts, and recovery. Stay on top of your health and fitness goals with detailed insights to optimize your performance and well-being.

WOMEN’S HEALTH INSIGHTS: With Ultrahuman Ring's advanced women's health features, track ovulation, cycles and pregnancy. Through multi-biomarker-based tracking for those looking to conceive, predict a 7-day fertile window and pinpoint ovulation with precision. Access cycle tracking combined with biomarker-based personalized guidance for every phase (Menstruation, Ovulation, Follicular, and Luteal). With Pregnancy Mode, expecting mothers get tailored pregnancy insights throughout each trimester.