Oura Ring Gen2
Quick details
Released
2017-11
Operating system
Proprietary embedded firmware
Display Screenless
Battery life Up to 7 days
Water resistance 100 m
GPS No
Sensors Infrared PPG, accelerometer, NTC temperature sensors
Links Oura
Technical specifications
General
Release date 2017-11
Product type Smart ring
Weight About 4-6 g depending on size/style
Material Titanium; PVD coating on Gold/Silver and DLC coating on Black/Stealth
Water resistance 100 m / 328 ft
Color options Stealth, Black, Silver, Gold; Balance and Heritage 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 USB charging dock
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 (infrared PPG)
Electrical heart rate No
SpO2 No
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
Sleep Yes
Heart rate Yes (nighttime resting heart rate)
HRV Yes (nighttime)
Stress No dedicated Daytime Stress feature
Blood oxygen No
Respiration rate Yes (nighttime)
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
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.