The Oura Ring Sizing Kit allows for you, and those around you, to find the ideal fit before purchasing. Oura Ring sizes are slightly different from standard ring sizes, so it is important to size yourself using our tools and to follow our sizing instructions. You can also size yourself in stores where there is an Oura Ring display. A properly fitting Oura Ring will result in the highest possible data accuracy, comfort, and overall experience. This is a certified refurbished product of Oura Ring.

Oura is the creator of the revolutionary smart ring— Oura Ring — and the Oura App, a world-class personal health platform. Together, the Oura Ring and Oura App work hand-in-hand to provide members with accurate and personalized daily health data, insights, and guidance. Oura Ring is sleek, accurate, and comfortable — it tracks your sleep, activity, and recovery and so much more with advanced sensor technology and up to 7 days battery life. The Oura Membership is always improving with new features and product updates that make tracking your health more personal than ever. New members get the first month of Oura Membership free, then it’s $5.99 per month.

Oura Ring is FSA/HSA Eligible — we can accept FSA or HSA funds for the following: Oura Ring, additional chargers, and shipping.

IMPORTANT: Size yourself with the Oura Ring Sizing Kit before you buy — Oura Rings are not US standard sizing, and finding the right size will result in the best experience possible.

Oura Membership First month of membership is on us with your purchase, $5.99/mo afterwards. Offer available to new members only. Membership is tied to your account accessible via the Oura App, not your physical ring.

• Size Before You Buy: Order a sizing kit to find your optimal size, then return to to buy your Oura Ring.
• Sleep Score: Your Sleep Score answers, "how well did you sleep last night?", based on data points including: total sleep, how much time you spent in each sleep stage, HRV, and more.
• Readiness Score: Readiness is a holistic picture of your health — taking into account your recent activity, sleep patterns, and key biometric signals.
• Activity Score: Your Activity Score is comprised of three core pillars — inactivity, activity level, and recovery.
• Stress: Oura will help you identify signs of stress and how well your body handles it. You’ll know when you need to incorporate more self-care practices and how to recover from long-term stressors.
• Resilience: Stress Resilience visualizes how well your body withstands stress over time and helps you build resilience to get through life’s challenges. A healthy amount of stress, sleep, and recovery keeps you prepared for whatever comes your way.

HSA/FSA Compatibility You may be eligible for reimbursement on your Oura Ring purchase. You can submit your Best Buy confirmation email to your FSA or HSA provider as proof of purchase. 24/7 Heart Rate Learn how your body responds to your daily habits and choices by following your heart rate from morning to night. Automatic Activity Detection You no longer need to manually start an activity. Whether you're running a marathon or running an errand, Oura automatically detects over 30 activities for you and delivers insights afterwards. Activity Levels Step count, calories burned, inactive times, training frequency, training volume, and more. Activity Goals Personalize goal types and baseline goal numbers in the Oura App. Activity Goals in Oura are still dynamic, which means that activity goals are increased on high readiness days and decreased on low readiness days. Workout Heart Rate & Insights Track your HR during your workouts, and receive post-workout insights that include key HR stats, route, distance, pace, and HR recovery. Circles Circles is a new way to connect, share, and care for each other. It’s a customizable, opt-in experience that allows Oura Members to easily share their scores with their community, send reactions, and check in on each other. Blood Oxygen Sensing (SpO2) By detecting your blood oxygen levels at night, Oura can tell if you're experiencing any breathing disturbances. Period Prediction Track the changes in your body throughout your cycle and predict your period up to 30 days in advance. Guided Audio Sessions See how your body signals respond to over 50 audio sessions for meditation, sleep, focus, and recovery. Restorative Time Track physical and mental recovery by understanding how much time you spend in a relaxed state each day. Rest Mode Rest Mode is activated when Oura detects that you're tired, unwell, or under stress. Your daily goals will be adjusted so you can put rest and recovery first. App Compatibility Automatically sync your health and workout data from your favorite apps through Apple Health, Google Fit, Health Connect, Strava, and Natural Cycles. iPhone and Apple Watch Compatibility Get your Oura data at a glance from your iPhone or Apple Watch with iOS widgets and Apple Watch complications. You can also access a companion version of the Oura App on your Apple Watch. Automatic Nap Detection Oura automatically records your naps and adjusts your daily scores. Recovery Time Recovery time tracks the number of easy days you've had during the week so you can allow your body to rest and recover. Calorie Opt-out Oura lets you opt out of calories (if desired) so that activity features better fit your lifestyle. Language Availability iOS and Android apps available in English, Finnish, Japanese, German, French, Spanish, and Italian. Supports metric and imperial units of measurement.