Oura releases Ring 5, 40% smaller with up to 9‑day battery

Oura has launched its fifth-generation smart ring, a device the company describes as the world's smallest. The Oura Ring 5 is available for preorder now and will begin shipping to customers on June 4.

The new ring represents a significant redesign, with the company stating it is 40 percent smaller than its predecessor, the Ring 4. It measures 6.09 millimeters wide and 2.28 millimeters thick. Despite the reduced size, Oura claims the battery life has improved, offering between six to nine days on a single charge compared to the previous model's five to eight days. The titanium ring features a new coating for enhanced scratch resistance and is rated waterproof to 100 meters.

Pricing for the Ring 5 starts at $399 for finishes in black or silver. Premium color options—including Stealth, Brushed Silver, Gold, and a new Deep Rose—cost $499. The ring requires an Oura Membership subscription, which remains priced at $5.99 per month or $69.99 per year. The company is also offering a new portable charging case for $99, which can provide approximately five additional charges and includes a button to check battery status.

Oura officials stated the smaller design was a direct response to user...