The Oura Ring 5 is the world’s smallest smart ring, measuring just 6.09 mm wide and 2.28 mm thick, which is about 40% smaller than the previous Oura Ring 4, which measured 7.90 mm wide and 2.88 mm thick [1]. Weighing between 2 and 2.69 grams, it is lighter than the Ring 4, which weighs between 3.3 and 5.2 grams [1]. The reduced size and thickness were designed mainly to improve user comfort and aesthetics, making the Ring 5 look and feel more like an ordinary ring while also fitting more discreetly [1, 2].
The Ring 5 also extends battery life to about six to nine days, an upgrade from the Ring 4’s five to eight days [1]. This helps users wear it longer between charges. The interior has low-profile sensor bumps to improve skin contact, replacing the flush interior of the previous model [2]. The Ring 5’s finish is more scratch-resistant as well, supporting durability during daily wear [2].
Oura responded to direct user requests for a thinner, smaller design with this latest model [1]. Photo comparisons show the Ring 5 is noticeably smaller than the Ring 4 and Generation 3 rings [3, 2]. Because of the change in sizing, Oura released an updated sizing kit to ensure users get an accurate fit, which is important for both comfort and accurate data tracking [3].
Compared to competitors like RingConn Gen 3 and Ultrahuman Ring Air, the Oura Ring 5 stands out as smaller and similarly comfortable [1, 2]. The ring starts at $399 [1].
The updated design and extended battery life position the Oura Ring 5 as a compact, durable choice for health tracking. Customers can order the new ring now with sizing kits available.
