Sensing, Made Human
24/7 heart rate, SpO2, sleep stages, activity tracking, and stress monitoring — all from a ring designed for daily wear. Medical-grade sensors wrapped in titanium, rated IP68 for showers, workouts, and everything in between.
Lifestyle
Designed to disappear into your day — quietly tracking what matters while you live your life.
Ring One at a social evening
Ring One close-up portrait
Tracking sleep with Ring One
What It Does
Advanced sleep staging — light, deep, REM — plus overnight HRV, skin temperature trends, and a morning recovery score so you know how to approach your day.
Continuous heart rate monitoring with resting HR trends, heart rate variability, and SpO2 readings. Medical-grade accuracy validated against clinical standards.
Automatic activity detection with steps, calories, and active minutes. No manual start needed — Ring One knows when you're moving.
Real-time stress tracking based on HRV patterns. Get nudges to breathe when your body needs it, and see your recovery trend over time.
Gallery
Technical
See It in Action