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Oura Ring 4 Ceramic - Midnight
Introducing Oura Ring 4 Ceramic: the latest evolution of the revolutionary smart ring. Oura Ring 4 brings you closer to what matters most — your health. The ring is powered by Smart Sensing, a new sensing platform that doesn’t just measure your biometrics, it adapts to you, providing insights into over 30 biometrics including sleep, readiness, activity, heart health, stress and women’s health. Oura Ring quietly and comfortably monitors your health and with up to 8 days of battery life — you can forget it’s even on.
Sleeker, smarter and more accurate than ever, Oura Ring 4 is made for you.
In stock. We'll dispatch your order immediately, but it may be affected by courier holiday delays.
Buy now, pay later from £124.75/mo
Key Benefits
-
Accurately measures over 30 key biometrics.
-
Syncs with Apple Health, Google Health, Strava and more.
-
Designed for all-day comfort and long-term wear.
-
Up to 8 days battery life.
SIZE BEFORE YOU BUY - Size yourself with the Oura Ring 4 Sizing Kit before purchasing your Oura Ring 4.
Oura Ring 4 Ceramic is the next evolution of the revolutionary smart ring, designed to help you get up close and personal with your health. It is built around a breakthrough sensing technology, Smart Sensing, which adapts to your finger to deliver accurate, continuous data. With up to 8 days of battery life, Oura Ring 4 provides the most complete picture of your health. It has a fully-titanium design with recessed sensors on the interior, making it more comfortable than ever before and gentle, even on sensitive skin. Oura Ring 4 Ceramic comes in an expanded size range (sizes 4-15) and 4 stunning finishes to fit your style and your finger, effortlessly.
PRECISION ACCURACY WITH SMART SENSING - Oura tracks over 50 health metrics, including sleep, activity, stress, heart health, and women’s health metrics. Oura Ring 4 is powered by Smart Sensing, which adapts to you — delivering accurate, continuous data, day and night.
HOLISTIC HEALTH TRACKING - Oura provides over 30 biometrics, including sleep, activity, stress, heart health, and women’s health metrics.
DESIGNED FOR 24/7 WEAR — The updated design of the Oura Ring 4 is more comfortable, fits better than ever, and is water resistant. The first all-titanium smart ring combines exceptional durability with a gentle touch, even for sensitive skin.
LONG LASTING BATTERY - With up to 8 days of battery life, no screens, and no vibrations, Oura Ring 4 allows you to focus on the present. From a workout to a night out — you’re free to forget it’s on. Until you start getting compliments. Includes a dedicated charger for convenient, reliable recharging.
SYNC WITH YOUR FAVORITE APPS - Compatible with iOS and Android —Oura seamlessly integrates with over 40 apps including Apple Health, Google Health Connect, Natural Cycles, Flo, Strava, & more.
CERAMIC LIKE YOU'VE NEVER SEEN - Thoughtfully crafted in high-performance zirconia ceramic, Oura Ring 4 Ceramic combines refined elegance with material innovation. Each ceramic ring goes through a traditional firing process that strengthens the material and gives it a smooth, polished finish.
MEMBERSHIP IMPROVES WITH YOU - First month of Oura Membership is on us for new members with your purchase, £5.99/mo afterwards (or £69.99 annually). Enjoy access to continuous features and app updates within the award-winning Oura App.
The Oura Ring integrates advanced technology with a deep understanding of wellness, offering a truly holistic approach to health tracking. Backed by an in-house team of over 20 PhDs, the rings were refined across four generations, each version smarter, lighter, and more durable than the last, trusted by millions of users worldwide. Its research-grade sensors, comparable to those used in sleep labs, provide highly accurate to ensure you get reliable insights for your wellbeing.
The ring also continuously fine-tunes your health data, delivering increasingly personalised feedback the longer it’s worn. Additionally, each Oura Ring is made from aerospace-grade titanium, one of the strongest materials on earth. Years of testing guarantee they're comfortable to wear and will last long– making them a reliable partner that powers your lifelong health journey.
Born in the happiest country in the world, Oura is the wellness brand behind the revolutionary Oura Ring and Oura App. Combining Finnish craftsmanship with cutting-edge technology, its mission is simple: to make health a daily practice. That’s why they created a tool that fits seamlessly into daily life, offering clear insights to support wellbeing. Empowering individuals to take control of their health, Oura guides everyone on their journey, helping them make informed decisions and lead better, healthier lives.
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
WEARING YOUR OURA RING
The Oura Ring is designed for all-day comfort and can be worn 24/7.
TIP: Before purchasing the Oura Ring Gen4, it's a good idea to use the Oura Ring Sizing Kit (sold separately and available at Healf). This custom sizer helps you find the perfect fit, ensuring a more comfortable and accurate health tracking experience.
To avoid discomfort or unintended scratching, it is not recommended to wear the Oura Ring next to other rings.
For optimal wear, it is advised to use the Oura Ring on the non-dominant hand. This minimises friction and helps protect the ring from scratches caused by daily interactions with objects and surfaces.
WATER RESISTANCE
The Oura Ring is water-resistant up to 100 metres (approximately 330 feet).
It can be worn while showering, swimming, or engaging in recreational diving activities such as snorkelling. However, it is not recommended for scuba diving or for submersion underwater for more than 12 hours.
TEMPERATURE GUIDELINES
The Oura Ring operates effectively within a temperature range of -10°C to 52°C (14°F to 125°F).
It can be safely worn in the shower, hot tubs, saunas, ice baths, and cryotherapy tanks. However, prolonged exposure to extreme temperatures—below -20°C (-4°F) or above 60°C (140°F)—may damage the ring’s battery.
BATTERY LIFE
For the Oura Ring Generation 4, a full charge provides up to 8 days of battery life.
CARE AND MAINTENANCE
To clean the Oura Ring, use a small amount of mild dish soap and water, then rinse thoroughly.
Ensure both the ring and hands are completely dry before wearing it again.
Hand sanitiser is safe to use with the ring. For more thorough hand-washing routines, remove the ring while scrubbing and clean it separately as you would other jewellery.
Don’t leave the ring exposed to heat for extended periods.
Don’t puncture the Oura Ring or its battery.
SPECIFICATIONS:
Here are the specs formatted cleanly in your requested style: Sensors
Red and infrared LEDs measure blood oxygen levels
Green and infrared LEDs alternate to measure heart rate, heart rate variability, and respiration rate 24/7
Digital sensor measures temperature trends
Accelerometer tracks movement and activity 24/7
Compatibility
Oura App available in English, Finnish, Japanese, German, French, Spanish, Italian, Norwegian, Swedish, Czech, Dutch, and Danish
Supports metric and imperial units of measurement
Integrates with 40+ apps
Available on iOS and Android
Weight and Dimensions
Width: 7.9 mm
Thickness: 3.51 mm
Weight: 5.1 - 8.1 g depending on ring size
Battery Life
5-8 days of battery life**
Typically charges in 20-80 minutes depending on battery level
Quality Materials
High-performance zirconia ceramic exterior
Seamless titanium interior
Water resistant up to 100 m / 328 ft
Minor scratches from regular wear are normal
Erasable scuffs may occur while handling metal objects
Connectivity
Bluetooth Low Energy
Automatic firmware updates via Oura App
EMF-safe
Supports airplane mode
FCC-certified
Oura Ring 4 Ceramic - Midnight
Introducing Oura Ring 4 Ceramic: the latest evolution of the revolutionary smart ring. Oura Ring 4 brings you closer to what matters most — your health. The ring is powered by Smart Sensing, a new sensing platform that doesn’t just measure your biometrics, it adapts to you, providing insights into over 30 biometrics including sleep, readiness, activity, heart health, stress and women’s health. Oura Ring quietly and comfortably monitors your health and with up to 8 days of battery life — you can forget it’s even on.
Sleeker, smarter and more accurate than ever, Oura Ring 4 is made for you.
In stock. We'll dispatch your order immediately, but it may be affected by courier holiday delays.
Buy now, pay later from £124.75/mo
Key Benefits
-
Accurately measures over 30 key biometrics.
-
Syncs with Apple Health, Google Health, Strava and more.
-
Designed for all-day comfort and long-term wear.
-
Up to 8 days battery life.
SIZE BEFORE YOU BUY - Size yourself with the Oura Ring 4 Sizing Kit before purchasing your Oura Ring 4.
Oura Ring 4 Ceramic is the next evolution of the revolutionary smart ring, designed to help you get up close and personal with your health. It is built around a breakthrough sensing technology, Smart Sensing, which adapts to your finger to deliver accurate, continuous data. With up to 8 days of battery life, Oura Ring 4 provides the most complete picture of your health. It has a fully-titanium design with recessed sensors on the interior, making it more comfortable than ever before and gentle, even on sensitive skin. Oura Ring 4 Ceramic comes in an expanded size range (sizes 4-15) and 4 stunning finishes to fit your style and your finger, effortlessly.
PRECISION ACCURACY WITH SMART SENSING - Oura tracks over 50 health metrics, including sleep, activity, stress, heart health, and women’s health metrics. Oura Ring 4 is powered by Smart Sensing, which adapts to you — delivering accurate, continuous data, day and night.
HOLISTIC HEALTH TRACKING - Oura provides over 30 biometrics, including sleep, activity, stress, heart health, and women’s health metrics.
DESIGNED FOR 24/7 WEAR — The updated design of the Oura Ring 4 is more comfortable, fits better than ever, and is water resistant. The first all-titanium smart ring combines exceptional durability with a gentle touch, even for sensitive skin.
LONG LASTING BATTERY - With up to 8 days of battery life, no screens, and no vibrations, Oura Ring 4 allows you to focus on the present. From a workout to a night out — you’re free to forget it’s on. Until you start getting compliments. Includes a dedicated charger for convenient, reliable recharging.
SYNC WITH YOUR FAVORITE APPS - Compatible with iOS and Android —Oura seamlessly integrates with over 40 apps including Apple Health, Google Health Connect, Natural Cycles, Flo, Strava, & more.
CERAMIC LIKE YOU'VE NEVER SEEN - Thoughtfully crafted in high-performance zirconia ceramic, Oura Ring 4 Ceramic combines refined elegance with material innovation. Each ceramic ring goes through a traditional firing process that strengthens the material and gives it a smooth, polished finish.
MEMBERSHIP IMPROVES WITH YOU - First month of Oura Membership is on us for new members with your purchase, £5.99/mo afterwards (or £69.99 annually). Enjoy access to continuous features and app updates within the award-winning Oura App.
The Oura Ring integrates advanced technology with a deep understanding of wellness, offering a truly holistic approach to health tracking. Backed by an in-house team of over 20 PhDs, the rings were refined across four generations, each version smarter, lighter, and more durable than the last, trusted by millions of users worldwide. Its research-grade sensors, comparable to those used in sleep labs, provide highly accurate to ensure you get reliable insights for your wellbeing.
The ring also continuously fine-tunes your health data, delivering increasingly personalised feedback the longer it’s worn. Additionally, each Oura Ring is made from aerospace-grade titanium, one of the strongest materials on earth. Years of testing guarantee they're comfortable to wear and will last long– making them a reliable partner that powers your lifelong health journey.
Born in the happiest country in the world, Oura is the wellness brand behind the revolutionary Oura Ring and Oura App. Combining Finnish craftsmanship with cutting-edge technology, its mission is simple: to make health a daily practice. That’s why they created a tool that fits seamlessly into daily life, offering clear insights to support wellbeing. Empowering individuals to take control of their health, Oura guides everyone on their journey, helping them make informed decisions and lead better, healthier lives.
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
WEARING YOUR OURA RING
The Oura Ring is designed for all-day comfort and can be worn 24/7.
TIP: Before purchasing the Oura Ring Gen4, it's a good idea to use the Oura Ring Sizing Kit (sold separately and available at Healf). This custom sizer helps you find the perfect fit, ensuring a more comfortable and accurate health tracking experience.
To avoid discomfort or unintended scratching, it is not recommended to wear the Oura Ring next to other rings.
For optimal wear, it is advised to use the Oura Ring on the non-dominant hand. This minimises friction and helps protect the ring from scratches caused by daily interactions with objects and surfaces.
WATER RESISTANCE
The Oura Ring is water-resistant up to 100 metres (approximately 330 feet).
It can be worn while showering, swimming, or engaging in recreational diving activities such as snorkelling. However, it is not recommended for scuba diving or for submersion underwater for more than 12 hours.
TEMPERATURE GUIDELINES
The Oura Ring operates effectively within a temperature range of -10°C to 52°C (14°F to 125°F).
It can be safely worn in the shower, hot tubs, saunas, ice baths, and cryotherapy tanks. However, prolonged exposure to extreme temperatures—below -20°C (-4°F) or above 60°C (140°F)—may damage the ring’s battery.
BATTERY LIFE
For the Oura Ring Generation 4, a full charge provides up to 8 days of battery life.
CARE AND MAINTENANCE
To clean the Oura Ring, use a small amount of mild dish soap and water, then rinse thoroughly.
Ensure both the ring and hands are completely dry before wearing it again.
Hand sanitiser is safe to use with the ring. For more thorough hand-washing routines, remove the ring while scrubbing and clean it separately as you would other jewellery.
Don’t leave the ring exposed to heat for extended periods.
Don’t puncture the Oura Ring or its battery.
SPECIFICATIONS:
Here are the specs formatted cleanly in your requested style: Sensors
Red and infrared LEDs measure blood oxygen levels
Green and infrared LEDs alternate to measure heart rate, heart rate variability, and respiration rate 24/7
Digital sensor measures temperature trends
Accelerometer tracks movement and activity 24/7
Compatibility
Oura App available in English, Finnish, Japanese, German, French, Spanish, Italian, Norwegian, Swedish, Czech, Dutch, and Danish
Supports metric and imperial units of measurement
Integrates with 40+ apps
Available on iOS and Android
Weight and Dimensions
Width: 7.9 mm
Thickness: 3.51 mm
Weight: 5.1 - 8.1 g depending on ring size
Battery Life
5-8 days of battery life**
Typically charges in 20-80 minutes depending on battery level
Quality Materials
High-performance zirconia ceramic exterior
Seamless titanium interior
Water resistant up to 100 m / 328 ft
Minor scratches from regular wear are normal
Erasable scuffs may occur while handling metal objects
Connectivity
Bluetooth Low Energy
Automatic firmware updates via Oura App
EMF-safe
Supports airplane mode
FCC-certified
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Healf Curation Process™
Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.
The Discovery
Expert Validation
Community Testing
The Discovery
Expert Validation