Technical specifications for OURA Ring 4 – Silver, Size 7
OVERVIEW
Type
Smart ring
App store
– Apple App Store
– Google Play Store
– Google Play Store
Size / fit
Size 7
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














































































































































































































































































































































































































Tracey E. –
Everything went well
Thank you
Tracey E. –
Karen C. –
Three stars — not bad but not great either. Delivery was good, product is functional but unremarkable.
Karen C. –
Freya K. –
Happy enough with the overall experience. Delivery was on time and driver was professional. Product is average quality.
Freya K. –
Lisa A. –
On time delivery and parcel in good condition. Personable polite delivery driver
Lisa A. –
Mark G. –
Would have been 5 stars apart from someone phoning me to try and sell extended warranty
Mark G. –
Deborah C. –
Punctual and efficient.
Deborah C. –
Clarke C. –
arrived on time. delivery guys took rubbish and old unit
Clarke C. –
Simona O. –
The driver arrived on time and the driver was very helpful when deliver my order.
Simona O. –
Brad C. –
Good price, fast delivery.
Brad C. –
Dominic B. –
Top
Notch customer service as always
Dominic B. –
Thomas E. –
Easy ordering. Swift delivery. Brilliant aftercare and customer service. Constant delivery updates.
Thomas E. –