How It Works
Wear — Slip the ring on like any band. IŌNE fits comfortably day and night, designed for sizes 7–12. Titanium frame with ceramic coating: lightweight, hypoallergenic, scratch-resistant. No charging cables to fumble with — it stays ready when you are.
Connect — Pair instantly with the app via Bluetooth. One tap links the ring to your phone and your data syncs automatically in the background — no complex setup, no accounts to manage, no distractions.
Track — Sleep, heart rate, blood oxygen (SpO2), HRV, stress levels, activity and calories. IŌNE reads your body's signals 24/7 using advanced PPG sensors and a built-in accelerometer, all packed into a 2.5 mm slim ring — no screen on your finger required.
Understand — Open the app to see your trends. Personalized scores show how well you slept, how ready you are to train, and where to recover. IŌNE learns your patterns over time and delivers precise insights, day after day. Intelligence you can truly act on.
Live — Wear it and forget it. Up to 5–7 days of battery life, full magnetic charge in 60 minutes, IP68 waterproof rated to 50 metres. A design that disappears into your life — in the pool, at the gym, in your sleep.
Size Guide
Finding your perfect fit takes 30 seconds.
A well-fitted ring stays in place without feeling tight — and for a smart ring, fit matters even more. The sensors need consistent contact with your skin to track your health data accurately.
How to Measure
Method 1 – Strip of paper Wrap a thin strip of paper around the base of your finger. Mark where the paper overlaps, then lay it flat and measure the length in millimeters. This is your ring circumference.
Method 2 – Existing ring Place a ring that fits well on a flat surface and measure the inner diameter in millimeters using a ruler.
Tips for the Best Fit
- Measure at the end of the day — fingers are slightly larger in the evening
- Measure the specific finger you plan to wear the ring on
- If you're between two sizes, size up
- Avoid measuring when cold — fingers are smaller in low temperatures
- Your dominant hand is usually slightly larger than the other
Smart Ring Fit Guide
Smart rings fit differently from traditional rings. Choose a size that slides on comfortably but doesn't move around freely — the sensors need consistent skin contact to work accurately. The ring should feel snug but never uncomfortable.
Still not sure? Contact us at ionecustomercare@gmail.com — we'll help you find your perfect fit.
