Oura Ring 4 Ceramic review: a colorful glow up

In the world of wearable technology, aesthetics often take a backseat to functionality. However, the latest Oura Ring 4 Ceramic proves that smart devices can be both stylish and functional. Designed to fit seamlessly with your jewelry collection, this smart ring marks Oura's first foray into non-metallic finishes, opting for a durable zirconia ceramic instead. I’ve spent three weeks testing the Oura Ring 4 Ceramic, and while I won't delve into the software specifics—as they mirror those of the standard Oura Ring 4—this review will focus on its design and user experience. The ring is available in four appealing colors: Midnight (dark blue), Cloud (white), Tide (light teal), and Petal (light pink), with a price tag of $500, which is $150 more than the original model. I chose the Midnight variant, which can appear almost black from a distance, adding to its understated elegance. This smart ring is slightly thicker than its predecessor, measuring 3.51 mm compared to the titanium version’s 2.88 mm, yet it remains comfortable and surprisingly lightweight, weighing between 5.1 to 8.1 grams depending on size. Unlike traditional tech wearables, the Oura Ring 4 Ceramic does not have a metallic look. Its smooth surface resists fingerprints better than its titanium counterpart, making it a practical choice for daily wear. One unique feature of the ceramic material is its warm feel, which can sometimes lead to a slightly 'sticky' sensation on the fingers. However, users can quickly adapt to this. Oura claims that the vibrant colors of the rings come from natural minerals within the ceramic, ensuring they remain bright over time. I have only had the ring for a few weeks, but its color has remained consistent since day one. Nonetheless, the ring is susceptible to scratches from softer metals, like those found in kitchenware. Oura recommends using a Polishing Pad to mitigate these issues, although my review unit did not come with one. I did notice some marks on the ring, but they turned out to be easily removable smudges. For optimal protection, Oura advises wearing the ring on your non-dominant hand, although I found it most comfortable on my dominant index finger. During my testing, the ring endured a busy travel day at TechCrunch Disrupt without any visible damage, despite my clumsiness and various impacts. While it is water-resistant up to 100 meters, I chose to remove it while doing the dishes to prevent potential scuffs from metal contact. Beyond its aesthetics, the Oura Ring 4 Ceramic excels in monitoring health metrics such as heart rate, sleep, and stress through the companion app. I eagerly anticipated my daily 'readiness score,' which reflects both short-term and long-term health data. Battery life has also been impressive, with a weekly charge aligning with Oura's claims of 5-8 days of use. Ultimately, the decision between titanium and ceramic comes down to personal preference and budget. While both options share the same functionality, the Oura Ring 4 Ceramic stands out with its vibrant colors and stylish design, making it an excellent choice for those seeking both form and function in a smart ring.