Oura Ring 4 Stealth Switzerland Stainless steel is durable yet

Stainless steel is durable yet lightweight

quick-drying and anti-bacterial properties for a fresh feel

This running cap is ideal for long distance running

while a spike plate with 8 removable pins provides grip to power through the finish

Size up for a comfier fit

Oura Ring 4 Stealth Switzerland Stainless steel is durable yetNew Smart Sensing technology provides enhanced accuracy, deeper personalization, and longer battery life. Sleek, fully titanium design and discreet sensors provide 24 7 comfort. With 5 8 days** of battery life per charge, never miss a beat when it comes to tracking your health. Oura Membership grows with you Track over 50 health and wellness metrics, and get personalized insights into your sleep, activity, stress, metabolic, heart health, and womens