Is the Circular Ring 2 worth it over an Oura Ring?

It costs far less and needs no subscription, and it adds ECG. Oura still wins on sleep accuracy and app polish. Choose Circular if price and no-fee tracking matter most.

How long does the battery really last?

Circular claims 8 days, but owners report about five days with continuous tracking. A full charge takes around 30 minutes.

Yes. It is IP68 rated and water resistant to 50m, so pools, showers and open-water swims are fine.

What sizes does it come in?

Circular sells the Ring 2 in standard ring sizes with a sizing kit. Order the kit first; a loose fit weakens heart rate and ECG readings.

Does it need a subscription?

No. The core health tools, including ECG and sleep tracking, work without a monthly fee.

The best new price seen is $124.99 at eBay as of November 6, 2026. Two stores list it new, so compare both before buying.

Where is the Circular Ring 2 cheapest?

At Amazon, for $169.99, as of our latest check.

Where can I buy the Circular Ring 2?

4 stores we checked sell it, including Amazon, eBay, Joyus, StackSocial.

Circular Ring 2

Best price now

$169.99at AmazonObserved at 10:48 AM

Prices are checked against each store and labelled with when.

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Our take on the Circular Ring 2

The Circular Ring 2 is a titanium smart ring that tracks sleep, heart rate, ECG and other health metrics through the finger. It weighs 4g, is 2.55mm thick and 7.8mm wide, and is rated IP68 to 50m. Circular claims 8 days of battery, though real use runs closer to five, and a full charge takes about 30 minutes. At $124.99 at eBay as of November 6, 2026, it sits well below the $300-plus tier of the Oura Ring 4 and is the cheapest titanium ring with ECG on the market.