Oura has cornered the U.S. smart ring market, with its latest model, the Oura Ring 4, highly rated across the board. While there are other smart rings on the market, including the Samsung Galaxy Ring, Evie Ring, and RingConn, none have earned brand loyalty comparable to Oura’s.

But that could soon change. According to a March ruling from the U.S. Department of Customs and Border Protection, Ultrahuman is clear to sell its rings in the U.S. again as of late March. The Indian manufacturer has been hamstrung from selling its previous smart ring model, the Ring Air in the United States since late 2025, when the U.S. International Trade Commission ruled in Oura’s favor in a patent dispute. The Ultrahuman Ring Air featured an internal curved battery and sensor that infringed on Oura’s patents. Rather than reach a royalties agreement with Oura, Ultrahuman pulled its Ring Air from the shelves and began work on the Ring Pro, Ultrahuman’s third-generation smart ring.

And there could definitely be a few benefits to choosing the Ring Pro over the Oura Ring 4.

For example, unlike Oura, Ultrahuman doesn’t require a subscription to use its smart rings. The Ring Pro model also offers an astonishing 15 days of battery life on a single charge, and its case can boost that lifespan to 45 days. That puts it well above the Oura Ring’s estimated 5 to 8 days of battery life. The Ultrahuman Ring Pro has a redesigned heart rate sensor, a dual-core processor for on-chip machine learning, and 250 days of on-device health data storage. So you don’t need to have the smart ring constantly tethered to your phone, either. The Oura Ring 4, on the other hand, may have similar health sensor capabilities, but only has up to a week of on-device health data storage and its internal chip operates on a single core, so it has less horsepower for its machine-learning capabilities.

The Ring Pro’s biggest hurdle is going to come from its steep entry-level cost. It retails for $479 with its charging case. The case is also sold separately for $100. The Oura Ring 4 starts at $349, but can be as pricey as $499 depending on what finish you choose. The Oura Ring 4 also requires a monthly subscription of $5.99, which amounts to about $70 per year.

However, it remains to be seen whether the Ring Pro’s battery design and sensor locations are distinct enough to avoid any potential litigation from Oura in the near future.

International smart ring enthusiasts have been able to get their hands on the Ultrahuman Ring Pro while Ultrahuman waited on U.S. Customs and Border Protection to grant clearance. Early reception among the international audience has been mostly positive due to its deep health tracking features, sleek design, and charging case. With U.S. sales now available, Ultrahuman stands to become a more household name in the world of smart rings.