The Oura ring has become one of the most popular wearable devices for tracking health metrics like sleep, activity, and readiness. But what exactly goes into making this smart ring? In this comprehensive guide, we’ll take a close look at what the Oura ring is made of, from the outer materials to the inner tech.

If you’re short on time, here’s a quick answer: the Oura ring has a titanium outer shell with gold, silver, black, or stealth coating options. Inside there are sensors like accelerometers and temperature sensors plus a battery and communication chips.

Outer Shell and Finish

The outer shell and finish of the Oura Ring play a crucial role in both its durability and aesthetic appeal. Let’s take a closer look at the materials and construction that make up this remarkable piece of wearable technology.

Titanium Construction

The Oura Ring is crafted using high-quality titanium, a lightweight and durable material known for its strength and corrosion resistance. Titanium is often used in aerospace and medical industries due to its outstanding properties.

This choice of material ensures that the Oura Ring can withstand the rigors of everyday wear and tear, making it a reliable companion for your health and wellness journey.

In addition to its durability, titanium is also hypoallergenic, making it an excellent choice for individuals with sensitive skin. It is resistant to corrosion and tarnish, ensuring that the Oura Ring will maintain its lustrous appearance over time.

Color and Finish Options

The Oura Ring is available in a range of color and finish options to suit individual preferences and styles. Whether you prefer a classic silver look or a bolder statement with a black or gold finish, the Oura Ring offers something for everyone.

One popular option is the Stealth Black finish, which adds a sleek and modern touch to the ring’s design. This black coating is applied using a process called physical vapor deposition (PVD), which creates a durable and scratch-resistant surface.

For those who prefer a more traditional look, the Heritage Silver finish provides a timeless appeal. It showcases the natural beauty of titanium, with a polished and elegant appearance.

It’s worth noting that the color and finish options may vary depending on the specific Oura Ring model you choose. So, be sure to explore the available options when making your selection.

To learn more about the materials and construction of the Oura Ring, you can visit their official website, where they provide detailed information about the manufacturing process and the high-quality materials used.

Internal Components

When it comes to the internal components of the Oura Ring, there are several key elements that contribute to its functionality and performance. These components include sensors, processor and memory, and the battery.


The Oura Ring is equipped with advanced sensors that are capable of collecting a wealth of data about your body. These sensors include an optical heart rate sensor, a body temperature sensor, an accelerometer, and a gyroscope.

The optical heart rate sensor uses LED lights to measure your heart rate, while the body temperature sensor tracks changes in your body temperature throughout the day and night. The accelerometer and gyroscope work together to detect your movements and provide insights into your sleep patterns and activity levels.

Processor and Memory

The Oura Ring features a powerful processor and ample memory to handle the complex algorithms and calculations required to analyze the data collected by the sensors. The processor efficiently processes the data, while the memory stores the information for future reference.

This enables the ring to provide accurate and real-time feedback on your health and sleep patterns.


The Oura Ring is powered by a rechargeable battery that allows for continuous use throughout the day and night. The battery is designed to last for several days on a single charge, depending on usage. It can be charged using the included charging dock or a USB cable.

The ring also has a battery-saving mode that extends its battery life, ensuring that you can rely on it for extended periods without worrying about running out of power.

Sizing and Adjustment

When it comes to wearing a Oura Ring, getting the right fit is crucial. The ring should feel comfortable on your finger and not be too loose or too tight. To help users find their perfect fit, Oura offers both fixed sizes and a sizing kit.

Fixed Sizes

For those who already know their ring size, Oura offers a range of fixed sizes to choose from. These sizes are based on standard ring sizes and are available in both men’s and women’s sizes. The rings are made with precision to ensure a comfortable fit and are designed to be worn throughout the day without causing any discomfort.

It’s important to note that the Oura Ring is meant to be worn on either the index, middle, or ring finger. It is not recommended to wear the ring on the pinky finger as it may affect the accuracy of the data collected by the sensors.

Sizing Kit for Perfect Fit

If you are unsure of your ring size, or if you want to ensure a perfect fit, Oura provides a sizing kit. The sizing kit includes a set of plastic ring sizers that you can try on to determine your ideal size. The kit also includes instructions on how to measure your ring size accurately.

Once you have determined your size using the sizing kit, you can then select the corresponding fixed size when ordering your Oura Ring. This ensures that you get a ring that fits you perfectly and provides accurate data collection.

It’s important to note that the sizing kit is available for free and can be requested from the Oura website. This allows users to try on different sizes and find the most comfortable fit before making a purchase.

Getting the right size for your Oura Ring is essential for optimal comfort and accurate data collection. Whether you already know your ring size or need to use the sizing kit, Oura provides options to ensure that every user can find their perfect fit.

Durability and Water Resistance

When it comes to the durability and water resistance of the Oura Ring, you can rest assured that it is designed to withstand the challenges of everyday wear. The materials used in its construction are carefully chosen to ensure longevity and protection against water damage.

Scratch Resistance

The Oura Ring is made of a high-quality ceramic composite, which is known for its exceptional scratch resistance. This means that even with regular use, you won’t have to worry about unsightly scratches marring the surface of your ring.

Whether you’re typing away at your keyboard or engaging in physical activities, the Oura Ring is built to withstand the rigors of daily life without showing signs of wear and tear.

Waterproof Rating

The Oura Ring boasts an impressive waterproof rating of 5 ATM (atmospheres). This means that it is water-resistant up to a depth of 50 meters, making it suitable for swimming, showering, and other water-related activities.

Whether you’re taking a dip in the pool or washing your hands, you can wear your Oura Ring with confidence, knowing that it is designed to withstand exposure to water without compromising its functionality.

It’s important to note that while the Oura Ring is highly water-resistant, it is not designed for deep-sea diving or prolonged exposure to water at extreme depths. If you’re planning on engaging in activities that go beyond the recommended depth limit, it’s best to remove your ring to avoid any potential damage.

For more information on the durability and water resistance of the Oura Ring, you can visit the official Oura website at They provide detailed specifications and insights into the construction and materials used in the making of the ring.

Biocompatibility and Hypoallergenic Properties

The Oura Ring is known for its exceptional biocompatibility and hypoallergenic properties, making it suitable for people with sensitive skin or allergies. These features are crucial as the ring is worn directly on the finger for extended periods of time.


One of the key aspects of the Oura Ring’s design is that it is completely nickel-free. Nickel, a common metal found in many jewelry items, can cause allergic reactions in some individuals. By eliminating nickel from its construction, the Oura Ring ensures that wearers won’t experience any discomfort or skin irritation.

Non-Irritating Materials

The Oura Ring is made of high-quality materials that are known to be non-irritating to the skin. It is crafted from medical-grade, hypoallergenic titanium, which is a lightweight and durable metal. Titanium is not only resistant to corrosion, but it is also biocompatible, meaning it is unlikely to cause any adverse reactions when in contact with the skin.

In addition to titanium, the Oura Ring features a scratch-resistant and non-conductive ceramic outer layer. This layer adds an extra level of protection to the ring and prevents any potential skin irritation that may arise from prolonged contact with the metal components.


The Oura ring may seem like a simple wearable device, but a lot of advanced engineering and design goes into crafting the smart ring. With a titanium outer shell, internal sensors and tech, and a comfortable, adjustable fit, the ring is built to last while tracking meaningful health metrics.

Understanding the materials and construction of the Oura ring can help you appreciate what sets it apart from other wearables and makes it such an innovative health tracker.

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