This is really an upgrade-and-availability question. The Ultrahuman Ring Pro is the redesigned successor: a ~15-day battery, on-ring processing, and — crucially — it is on sale in the US. The older Ultrahuman Ring Air is under a US import ban (after Oura’s ITC patent win) and carried widely reported battery failures. For a US buyer, this is not much of a contest.
Ultrahuman Ring Pro or Ultrahuman Ring Air: which is better?
Higher ONDA score: Ultrahuman Ring Pro (7.3 vs 6.9)
For US buyers the Ring Pro wins by default — the Ring Air is banned from US sale and can’t be bought there. Beyond availability, the Ring Pro roughly triples the battery (~15 vs ~4–6 days), adds on-ring processing, and is Ultrahuman’s answer to the Ring Air’s battery-reliability complaints. The Ring Air only makes sense at a steep discount where it’s still legally available and you accept the risk.
The short version
The Ultrahuman Ring Air is under a US import ban (October 2025) and can’t be bought in the US. The Ultrahuman Ring Pro is the redesigned, US-available successor.
The Ring Pro roughly triples the battery, adds on-ring processing, and fixes the availability and reliability problems that dogged the Ring Air.
When is the Ring Pro the right pick?
Almost always — it is the current, US-available, longer-lasting Ultrahuman ring.
When is the Ring Air the right pick?
Only where it’s still legally sold, heavily discounted, and you accept the battery-reliability risk. Not an option for US buyers.
Also worth comparing
Cross-shop the Ring Pro against Oura Ring 5, the Samsung Galaxy Ring and RingConn Gen 2. Full field: best HRV trackers.