Technical specifications for OURA Ring 4 – Stealth, Size 13
OVERVIEW
Type
Smart ring
App store
– Apple App Store
– Google Play Store
– Google Play Store
Size / fit
Size 13
Compatibility
– iOS 15.0 or later
– Android 9.0 or later
– Android 9.0 or later
Material
Titanium
CONNECTIVITY
Connectivity
Bluetooth Low Energy (BLE)
POWER
Battery type
Internal Lithium-ion battery
Charging method
Charging dock
Charge time
Up to 80 minutes
Battery life
Up to 8 days
FEATURES
Resistance
Water resistant to 100 m / 328 ft (not suitable for diving)
Health & fitness tracking
– Track steps
– Track distance
– Track calories
– Track heart rate
– Sleep monitoring
– Daytime stress
– Menstrual cycle tracking
– Blood oxygen
– Skin temperature
– 40+ activities
– Cardiovascular age
– Cardio capacity (VO2 Max)
– Readiness Score
– Illness detection
– Track distance
– Track calories
– Track heart rate
– Sleep monitoring
– Daytime stress
– Menstrual cycle tracking
– Blood oxygen
– Skin temperature
– 40+ activities
– Cardiovascular age
– Cardio capacity (VO2 Max)
– Readiness Score
– Illness detection
Sensors
– Barometer
– Gyroscope
– Heart rate monitor (HRM)
– Pedometer
– Reflectance pulse oximetry (SpO2)
– Temperature
– Gyroscope
– Heart rate monitor (HRM)
– Pedometer
– Reflectance pulse oximetry (SpO2)
– Temperature
GENERAL
Dimensions
– Width: 7.9 mm
– Thickness: 2.88 mm
– Thickness: 2.88 mm
Colour
Stealth
Weight
3.3-5.2 g (depending on ring size)
Manufacturer’s guarantee
2 years
Box contents
– Oura Ring 4
– Charging dock
– USB Type-C cable
– Charging dock
– USB Type-C cable














































































































































































































































































































































































































Patricia A. –
Quick, efficient , fast delivery, good service
Patricia A. –
Lynch W. –
Great delivery and easy process
Lynch W. –
Margaret T. –
Great and satisfied
Margaret T. –
Steve S. –
Fantastic delivery service. I got an email from them that gave me my delivery slot/window then a call from the delivery guys giving me a rough time. They arrived well within the delivery window and were helpful and courteous. I would definitely recommend this service and the delivery men as well
Steve S. –
Denise G. –
Very quick delivery and very friendly lively helpful delivery guys. Thank you
Denise G. –
David V. –
Great job, no fuss
David V. –
June P. –
Great thanks
June P. –
Andrew H. –
Excellent service ,good communication and very helpful delivery team ,thankyou ,I will definitely use this company again .
Andrew H. –
Kay C. –
Next day (Sunday) delivery in an emergency- excellent
Kay C. –