Oura OURA Ring 4 Midnight Blue Size 7

Oura ring 4 size 7 in midnight blue. Color not made anymore! Great condition with charger Oura Ring 4 Key Features * Durable, lightweight titanium design * Recessed sensors for a comfortable fit * Tracks heart rate, HRV, blood oxygen, respiration & body temperature trends * Tracks sleep, movement & daily activity 24/7 * Smart Sensing technology for accurate, continuous readings * 5–8 day battery life * Charges in approximately 20–80 minutes * Water resistant up to 100m / 328 ft * Bluetooth connectivity + Airplane Mode * Available in sizes 4–15 * Non-allergenic, BPA-free titanium interior