Technical specifications for OURA Ring 4 – Silver, Size 11
OVERVIEW
Type
Smart ring
App store
– Apple App Store
– Google Play Store
– Google Play Store
Size / fit
Size 11
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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Douglas R. –
Nice considerate team twice called to inform on rough eta and then actually eta left no mess and explained everything that needed to be done.
Douglas R. –
Rachel M. –
Works as described but the setup instructions were very unclear. Took far longer than it should have to get working.
Rachel M. –
Leslie H. –
Two pleasant young men delivered on time and as expected
Leslie H. –
Julie K. –
easy to order and easy to arrange delivery
Julie K. –
Ken E. –
Easy to use website and very quick delivery and a very polite young man delivered my order. A 10 out 10 all round
Ken E. –
Clairec T. –
Very fast reliable service
Clairec T. –
Michael A. –
Great service from ordering to item being delivered .
Michael A. –
Louise C. –
Good price, quick delivery, friendly delivery drivers 👍🏼
Louise C. –
Matthew E. –
Easy to order. Telephone lady was very patient and thorough.
The delivery men, 2 Romanians were extremely efficient, friendly and extremely helpful chaps.
Matthew E. –