[new] Oura Ring 3, Horizon black, size:13

Brand new (never used) Oura Ring3 Gen2, Horizon black Size:13 (20.9 mm diameter on the sensor bumpes, 22.48 mm on the rest, internal circumference is 70.6 mm) Two weeks old, I received as a replacement (new,not b-rated replacement) but wrong size was sent,so the box was only opened to confirm the size and check the ring. Approx 7-9 days of battery life. Core features: - 79-99% accuracy of sleep tracking validated against clinical standards - 24/7 heart rate tracking, HRV, blood oxygen (SpO2) - temperature trends, illness detection - automatic activity tracking - app integration (Apple health,Strava,etc) - pregnancy and cycle insights - daytime stress and resilience metrics - cardiovascular age, VO2 max and chronotype analysis Lightweight titanium build, hypoallergenic, waterproof One additional charger also included. With original packaging. Postage: 10€ for tracked postage Payment via Revolut only.