Circular Ring 2 (model CR2) vs Oura Ring 5

Buyers who want a titanium ring with an ECG sensor, paid for once with no required subscription, in a choice of four finishes from $349, and who are willing to order the $5 sizing kit and wait for it before the ring ships.

You lift weights or carry heavy loads with a ring on; you want to wear it in a sauna or in the sea; you expect contactless payments, which the Ring 2 specification does not list; you need one settled battery or charge time figure before buying; or you would rather wait for Ring 3 pre-orders in December 2026.

Anyone serious about sleep, HRV, and daily readiness who wants the longest-running, most-validated ring on the market.

You hate subscription pricing (try Ultrahuman), or you're an elite athlete who needs strain-coaching depth (try Whoop).

Which is better, the Circular Ring 2 (model CR2) or the Oura Ring 5?

We have not scored these two head to head, so this page does not name a winner. The Circular Ring 2 (model CR2) starts at $349 and the Oura Ring 5 at $399. The per-buyer recommendations below say who each one suits.

How much do they cost?

Circular Ring 2 (model CR2): $349 to $549. Oura Ring 5: $399 to $499. Prices are verified against the manufacturer; check the live links for current pricing.

Who should buy which one?

Circular Ring 2 (model CR2): Buyers who want a titanium ring with an ECG sensor, paid for once with no required subscription, in a choice of four finishes from $349, and who are willing to order the $5 sizing kit and wait for it before the ring ships. Oura Ring 5: Anyone serious about sleep, HRV, and daily readiness who wants the longest-running, most-validated ring on the market.