Oura's Ring 4 is hitting its lowest recorded price during Prime Day, down to $226 from its usual $349 across most sizes and colors on Amazon.
The Ring 5 launched recently and is the slimmer, more durable option, but the Ring 4 still packs the same core sensor array and tracks the same metrics. Oura has confirmed that new software features rolling out this month won't be gatekept to the Ring 5 — so buyers aren't stepping onto a dead-end hardware platform, at least for now. Battery life is also roughly comparable between the two generations. The catch: not every size and color is on sale, so check before you get your hopes up.
At $123 off, this is a reasonable entry point for anyone curious about smart rings without paying flagship prices — the Ring 4 at $226 undercuts the Ring 5 by a meaningful margin and still delivers the sleep, heart rate, and readiness tracking the brand is known for. That matters because Oura also charges a $6 monthly subscription on top of hardware, so lowering the upfront cost softens the long-term hit.
Smart rings remain a niche category, but Oura has held the lead over Samsung's Galaxy Ring and a handful of smaller rivals by iterating steadily rather than pivoting hard — a previous-gen discount like this is a textbook move to widen the installed base before the subscription revenue compounds.