🧱 Materials
Stainless steel, skin-friendly coating, sealed optics.
Track sleep, heart rate and SpO₂ without a bulky watch. Stainless steel, 5ATM waterproof, long battery life — no subscription.
Wear it everywhere — shower, swim, daily life. Rated 5ATM (50 m) with sealed sensor window and durable coating.
Stainless steel, skin-friendly coating, sealed optics.
Bluetooth 5.1 LE with auto-sync to the JRing app.
Feather-light. US 7–12, comfy for sleep.
iOS 10+ & Android 9+. No subscription.
VitaRing, magnetic fast-charge cable, quick guide.
5ATM (50 m). Swim & shower worry-free.
Feature | VitaRing | O***a | U***n |
---|---|---|---|
Monthly subscription | No | Often | Often |
Sleep staging & insights | Advanced + tips | Advanced | Basic |
24/7 Heart rate | Yes | Yes | Yes |
SpO₂ (blood oxygen) | Yes | Yes | Limited |
Battery life | 7–9 days | 4–6 days | 5–7 days |
Water rating | 5ATM (50 m) | 3–10ATM* | 3–5ATM |
Materials | Stainless steel | Titanium/Steel | Alloy/Steel |
Connectivity | Bluetooth 5.1 | Bluetooth 5.x | Bluetooth 5.x |
Platforms | iOS & Android | iOS & Android | iOS & Android |
Total cost | One-time purchase | Device + fees | Device + optional fees |
*Water rating varies by model. Focus on ownership cost, sleep depth, health metrics, battery and water rating.
No — all core features are included. Buy once, use every day.
Typical use 7–9 days. Magnetic fast charge ≈2 hours. You can wear the ring while the spare charges.
Yes. 5ATM (50 m). Safe for swimming and showering; avoid hot tubs/saunas for longevity.
iOS 10+ and Android 9+ via Bluetooth 5.1 with the JRing app.
US 7–12. Between sizes? Pick the larger for nighttime comfort. Our guide explains how to measure at home.
1-year limited warranty against manufacturing defects. 30-day returns in original condition.
Health data is encrypted in transit and at rest. You control exports and can delete data from the app settings.
Fast delivery — typically 5 business days with tracking. Worldwide service areas may vary.