Technical specifications for OURA Ring 4 – Stealth, Size 14
OVERVIEW
Type
Smart ring
App store
– Apple App Store
– Google Play Store
– Google Play Store
Size / fit
Size 14
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







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Graham S. –
SO informed me that my item was initially out stock and will inform when item,had been restocked. I received notification the following day that my order was to be deliberately afternoon, a day earlier than I had put on my order. Very satisfied with the service.
Graham S. –
Howard K. –
Delivered on time with regular updates prior to arrival. Delivery staff efficient, courteous and friendly. Excellent service, as usual.
Howard K. –
Burley D. –
Absolutely no problems with the delivery, was on time and courteous
Burley D. –
Anj H. –
The delivery guys were great. They had good energy and great attitudes. Getting the machines down was not an issue for them.
Anj H. –
Emma P. –
Great delivery drivers.
Arrived on time, were polite and helpful
Brilliant job by both the lads
Emma P. –
Rachel W. –
Good price, good equipment, friendly communicative delivery *****
Rachel W. –
Alan D. –
Excellent customer service by the delivery team
Alan D. –
John L. –
Delivery was as expected
John L. –
Margaret B. –
Very professional, quick, very polite, nice attitude.
Margaret B. –
Christine M. –
Easy, simple delivery. No issues.
Christine M. –