Technical specifications for OURA Ring 4 – Silver, Size 5
OVERVIEW
Type
Smart ring
App store
– Apple App Store
– Google Play Store
– Google Play Store
Size / fit
Size 5
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
Silver
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 H. –
Was kept up to date for the delivery and 2 gentlemen kindly were very professionals
Graham H. –
Joanna N. –
Good product range. Delivery date following day. Prompt and polite delivery.
Joanna N. –
Jennifer M. –
Arrived within delivery times and friendly drivers! Perfect
Jennifer M. –
David S. –
Everything went very smoothly from ordering through to the very helpful delivery drivers
David S. –
Chris P. –
Was received as promised. No problems at all
Chris P. –
Nick I. –
Quick efficient service
Nick I. –
Elizabeth E. –
Super speedy service, less than 24 hours from purchase to delivery- AND on a Sunday!
Elizabeth E. –
Douglas J. –
Delivery was good, delivered when they said they would.
Douglas J. –
Jean L. –
order two phones both came a day early no promblems with order and delivery
Jean L. –
Donaghey T. –
Competitive price, great communication & fast, free delivery!
Donaghey T. –
Kathryn S. –
Good service
Kathryn S. –
Richard B. –
The 3 delivery men were professional and friendly.
Richard B. –