Oura Ring 4 - Silver Smart Ring
$349.00
★
(4.7k reviews)
Oura Ring - the most accurate sleep and activity tracker is all about you: it measures your activity levels, monitors your sleep cycle and tracks key biometric signals.
Details
- Materials: Non-allergenic titanium on inner & outer surfaces, seamless titanium interior
- Sensors: Red and infrared LEDs for blood oxygen, green and infrared LEDs for heart rate and HRV, digital temperature sensor, accelerometer
- Battery Life: 5-8 days of battery life, charges in 20-80 minutes
- Water Resistance: Up to 100 meters / 328 feet
- Connectivity: Bluetooth Low Energy, automatic firmware updates, supports airplane mode
- Physical Dimensions: Width: 7.90mm, Thickness: 2.88mm, Weight: 3.3 to 5.2 grams
- Health Tracking: Readiness, Sleep, Activity, Daytime Stress, Heart Health, Women's Health