Oura Ring 4 - Brushed Silver - Size 10 - Smart Ring - Unique Sizing, Not Standard US Ring Sizes - Size First - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life

Oura Ring 4 - Brushed Silver - Size 10 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life

sylacor Ring Cover for Oura Ring Gen 4/ Gen 3, Anti-Scratch Elastic Silicone Oura Ring Case Protector for Men Women Working Out Gym

Oura Ring 4 Charger - Size 10 - Charging Dock and USB-C Cable - Charges Oura Ring 4 up to 8 Days