📦 Condition:
Brand new — never used.
Size: 8 (U.S. ring size) — Black finish (model JZ90‑54144‑08).
Sealed and unused, ready to ship.
🔧 Key Features & Health Tracking:
Tracks 50+ health and wellness metrics including heart rate, heart rate variability (HRV), blood oxygen (SpOâ‚‚), respiration, skin temperature, sleep quality, activity/steps, and rest/recovery readiness.
Uses advanced “Smart Sensing” with multiple sensor pathways to automatically adapt for best signal — improving accuracy even if the ring shifts during wear.
Sleek all‑titanium build — lightweight and designed for comfortable 24/7 wear (sleep, daily activities, workouts, etc.).
Water resistant (suitable for daily wear including hand‑washing, showers, and swimming) — ideal for everyday use.
Long battery life — up to ~8 days per charge (depending on usage and ring size).
Compatible with iOS and Android via companion app — syncs data for deep health & wellness insights (sleep, recovery, stress, trends over time).
📦 What’s Included:
Oura Ring 4 Smart Ring (Size 8, Black)
Charging dock / cable (per original retail kit)
Quick‑Start Guide & documentation
Original packaging (sealed)
đźšš Shipping Info:
Ships within 1 business day after payment clears
Packaged securely with padding to protect the ring during transit
30‑day return policy — item must remain unopened, sealed, and in described condition for return eligibility