| Brand | Oura |
|---|---|
| Battery Life | Up to 6 days |
| Color | Silver |
| For Operating Systems | iOS and Android (via Oura app) |
| Indoor/Outdoor | Both (wearable in all environments) |
| Item Weight | 3.3 g to 5.2 g |
| Item Width | 0.12 to 0.18 oz (7.9 mm) |
| MPN | JZ90‑54217‑08 |
| Model | Oura Ring 4 |
| Size | 8 (inner ring size) |
| Sport/Activity | General wellness, sleep, activity, and fitness tracking |
Check the listing for details. Oura Ring 4 Smart Ring Size 8 Silver Titanium | JZ90-54217-08 | Excellent. Color: Silver, Condition: Excellent - Refurbished. Listed at 219.95 USD. Personalized insights and health trends via the Oura app. Sleek Silver titanium design with ultra-light comfort for 24/7 wear. Functionality Grade A – Excellent – Like new, minimal signs of use. Key Features.
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