Best smart ring on a great deal: Oura Ring 4 now costs just under 8 thousand

If you’ve been looking for an opportunity to get a **top-of-the-line smart ring**, now is the perfect time. The Czech e-shop Alza is offering **premium Oura Ring 4 smart rings** with a 20% discount when using a special code. The basic versions in **Glossy Black** and **Silver** finishes are therefore available for just **7,992 CZK** instead of the original **9,990 CZK**, making them more affordable than ever before.

Premium features in a miniature body

The Oura Ring 4 is among the absolute top in the smart ring category. The device stands out with its **full titanium body**, which increases durability while reducing weight to just **4 grams**. Users will also appreciate the **water resistance up to 100 meters** (10 ATM), so they don’t have to worry about wearing the ring while swimming or showering.

The ring offers advanced health features including **blood oxygen saturation measurement**, **sleep monitoring**, **stress level measurement**, body temperature, and heart rate. **Menstrual cycle tracking** is also included for female users. The **battery life of up to 8 days** (192 hours) on a single charge is also exceptional, significantly surpassing competing models.

Compatibility with both **Android and iOS** operating systems ensures that virtually any smartphone owner can get the ring. The connection between devices is via **Bluetooth technology**, while a modern **USB-C charger**, which is included in the package, is used for charging.

Significant improvement over the previous generation

The fourth generation of the Oura smart ring represents a significant leap from the previous version. While the Oura Ring 3 (Gen3) was already a quality product in itself, the new model brings several key innovations that significantly improve the user experience and measurement accuracy.

The most visible difference is the redesigned inner part of the ring. While the **Oura Ring 3 had three raised «bubbles»** with sensors that could be uncomfortable during prolonged wear, the **Oura Ring 4 features recessed sensors** and a smooth inner surface. This makes all-day wear much more comfortable and the ring easier to put on and take off.

Significant improvement also came in the area of sensing technology. The **new Smart Sensing technology** uses **18 signal paths** (compared to just 8 in the previous generation), which significantly increases measurement accuracy. According to the manufacturer, the Oura Ring 4 has up to **120% better SpO2 detection** and **30% higher accuracy in nocturnal measurement**.

Comparison with the competition

Perhaps the most well-known competitor to the Oura Ring 4 is the **Ultrahuman Ring Air** – although reviewers worldwide agree that Oura also beats other brands – which also focuses on tracking health parameters. However, the Oura Ring 4 has the upper hand in several key areas. The most significant difference is in **battery life** – while Ultrahuman lasts approximately 6 days, the Oura Ring 4 offers up to 8 days of operation on a single charge.

The Oura Ring 4 also excels in **accuracy and depth of sleep data**. It is considered one of the most accurate rings for sleep tracking, including detailed analysis of individual sleep stages (light, deep, REM) and a comprehensive sleep score. According to many, the **Oura app** then provides a more user-friendly environment with clearer data display and long-term trends.

A clear comparison of all three models can be found in the following table:

All variants and their prices

In addition to the basic black and silver versions, the Oura Ring 4 also offers other premium variants. The elegant **Brushed Silver** (matte silver) and **Stealth** (matte black) are available for **11,490 CZK** (with code ALZADNY20 for 9,192 CZK). For more demanding customers, the luxurious **Gold** and **Rose Gold** versions are available for **13,690 CZK** (with code ALZADNY20 for 10,952 CZK).

For comparison, the older **Oura Ring 3** (Gen3) model in Heritage Silver finish is now available at a clearance price of **5,490 CZK**, which represents an interesting alternative for those who want to save money and don’t mind compromises in comfort and measurement accuracy.

All variants are available in different sizes, and it is important to choose the correct size for optimal comfort and functionality. A special **Sizing Kit** can be used for this purpose, which is recommended to purchase before buying the ring itself.

Price: from 7,992 CZK

Would you get the Oura Ring 4 smart ring?