OURA RING 4

Oura Ring 4 Silver — Size 7 — Specs

• Model: Oura Ring 4
• Color: Silver / Argent
• Size: 7
• Material: Full Titanium
• Finish: Glossy Silver with PVD coating
• Smart Sensing: Yes
• Heart Rate: 24/7 tracking
• HRV: Heart Rate Variability
• Blood Oxygen (SpO₂): Yes
• Temperature Sensor: Yes
• Respiratory Rate: Yes
• Sleep Tracking: Advanced sleep analysis
• Activity Tracking: Yes
• Stress Tracking: Yes
• Readiness Score: Yes
• Cardiovascular Age: Yes
• Cardio Capacity / VO₂ Max: Yes
• Sensors: Red, infrared & green LEDs + digital temperature sensor + accelerometer
• Battery Life: 5–8 days
• Charging Time: Approx. 20–80 minutes
• Water Resistance: 100m / 328 ft
• Connectivity: Bluetooth Low Energy
• Compatibility: iPhone & Android
• Width: 7.9mm
• Thickness: 2.88mm
• Weight: 3.3–5.2g depending on size
• Included: Ring + size-specific charger + USB-C cable
• Oura Membership: Required for full detailed insights and features.