Oura Ring Gen3
Quick details
Released
2021-10
Dimensions
About 7.9 mm wide; approximately 2.7-2.9 mm thick depending on style
Operating system
Proprietary embedded firmware
Display Screenless
Battery life Up to 7 days
Water resistance 100 m
GPS No
Sensors Red, green and infrared LEDs, temperature sensors, accelerometer
Links Oura
Technical specifications
General
Release date 2021-10-26
Product type Smart ring
Physical size About 7.9 mm wide; approximately 2.7-2.9 mm thick depending on style
Weight About 4-6 g depending on size/style
Material Titanium exterior with PVD or DLC coating depending on finish; non-metallic seamless inner molding
Water resistance 100 m / 328 ft
Color options Black, Brushed Titanium, Gold, Rose Gold, Silver, Stealth; Heritage and Horizon styles
Display type None (screenless)
Display size None
Display resolution None
Display brightness None
Display protection None
Battery Rechargeable internal battery
Battery life Up to 7 days
Charging Size-specific charging dock; USB-C to USB-A cable
Charging time Typically 20-80 minutes
Sensors
GNSS type None
GPS No
GALILEO No
GLONASS No
Beidou No
Accelerometer Yes
Barometric altimeter No
Compass No
Geomagnetic No
Ambient light sensor No
Optical heart rate Yes (red, green and infrared optical sensing)
Electrical heart rate No
SpO2 Yes (during sleep)
Temperature Yes
Galvanic skin response No
Microphone No
Speakers No
Vibration motor No
Health & activity tracking
Steps Yes
Distance Yes (activity estimates and connected-phone data where supported)
Calories burned Yes
Floors No
Sports tracking Automatic Activity Detection and workout heart-rate tracking
Sleep Yes
Heart rate Yes (24/7, including activity heart rate)
HRV Yes
Stress Yes (Daytime Stress via software)
Blood oxygen Yes (during sleep)
Respiration rate Yes
Skin temperature Yes
ECG No
Blood pressure No
Body composition No
Glucose No direct glucose sensor
Hydration level No
UV exposure No
Calorie intake No
Daily smart features
Smartphone compatibility Oura App on iOS and Android
Operating system at launch Proprietary embedded firmware
Storage Up to 7 days of data without syncing
Bluetooth Bluetooth Low Energy
Wi-Fi No
NFC / connected pay No
UWB No
Cellular No
Smartphone notifications No on-ring notifications
Bluetooth calling No
Smartphone music control No
On-board music storage No
Voice assistant No
Links
Affiliate link Oura
These technical specs are correct to the best of our knowledge at the time of publishing.