The Oura Ring 4 is selling for $246.05 at Amazon during Prime Day, its lowest recorded price.
The full list price is $499, making the discount $252.95 — just over 50 percent off. The deal went live on day two of Amazon's four-day Prime Day event, which runs through June 25. The ring tracks sleep, stress, activity, heart health, and women's health metrics, and the company claims up to eight days of battery life between charges. There is no screen; all data surfaces through a companion app.
Smart rings are a small but crowded field, and Oura has positioned the Ring 4 as the premium option — which makes the $499 sticker price a recurring objection. Getting it under $250 removes that friction for a lot of fence-sitters. It also keeps Oura competitive as Samsung and others push their own ring hardware into the market at lower entry points.
Worth noting: Oura charges a monthly subscription fee on top of the hardware cost, so the total-cost picture is a bit less rosy than the Prime Day price tag suggests.