Is the COLMI R02 worth it?

At $16.99 at eBay as of November 5, 2026, it is one of the cheapest ways to try a smart ring. Expect basic tracking, not the accuracy or app depth of a $300 ring.

What sizes does it come in?

Sizes 8, 9, 10 and 11, with the smallest about 18.5 mm in diameter. Measure your finger before ordering, since there are no half sizes.

Yes. It is IP68 rated, so pool swimming and showers are fine. Skip hot tubs and deep dives.

What app does it use?

The QRing app, available for iOS and Android. All health data, settings and firmware updates go through it.

The ring and a charging case. A charging cable is normally included, but confirm with the seller.

Budget rings like this drop most during big sales events. The current best new price is $16.99 at eBay as of November 5, 2026.

Where is the COLMI R02 Smart Ring with Charging Case cheapest?

At eBay, for $16.99, 64% under what the other stores charge, as of our latest check.

What do buyers say about the COLMI R02 Smart Ring with Charging Case?

Rated 4.2 out of 5 from 26 ratings. Buyers like: Seller described as A+ and excellent service and communication; Order delivered on time with no issues; Good ebayer.

Where can I buy the COLMI R02 Smart Ring with Charging Case?

9 stores we checked sell it, including wellnessenergyshop, eBay, hstrends, Amazon, Go Go Gadgets.

COLMI R02 Smart Ring with Charging Case

4.2

Best price now

$16.99at eBayObserved at 10:12 AM

64% under what the other stores charge

Compared across 4 stores. Prices are checked against each store and labelled with when.

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What reviewers say

The listing holds 4.2 out of 5 from 26 ratings, and the feedback shown is mostly about delivery and seller communication rather than the ring itself. There is little detailed owner commentary on tracking accuracy.

Pros

Orders arrived on time and as described
Seller communication rated highly
Works as a low-cost entry into smart rings

Cons

Too few ratings to judge long-term reliability
Limited feedback on sensor accuracy

About the COLMI R02 Smart Ring with Charging Case

About The Product

• Compact smart ring designed for everyday health and fitness tracking.

• Monitors basic health metrics including activity and wellness data.

• Includes portable charging case for convenient power on the go.

• Long battery life supports extended daily use with minimal charging.

• 5ATM waterproof design suitable for workouts, swimming, and daily wear.

COLMI Smart Ring

No.1 in sales on AliExpress, and is far ahead.

Note:

1. For best performance and accuracy, we recommend wearing the COLMI Ring on your index finger. If you prefer other fingers, the middle and ring fingers are also OK. Avoid using fingers that are narrower than the knuckles at the base.

2. The size of COLMI rings may not be completely in line with universal standards. Please measure your finger circumference before purchasing and make sure it fits comfortably, then choose the appropriate size.

3. How to start: Charge the COLMI Ring with the included charging cable. The heart rate light will light up to indicate successful startup. Then you can use the APP Qring to connect the COLMI Ring.

COLMI Smart Ring - R02 with Charging Case

Introducing the revolutionary COLMI R02 Smart Ring with Charging Case – a breakthrough in wearable technology, offering seamless health monitoring right at your fingertips. With its state-of-the-art design, you can effortlessly track your heart rate, blood oxygen and stress levels – all without lifting a finger. Your health data is automatically recorded, ensuring you're always in the know about your body's status.

Wear it worry-free every day, the titanium steel shell, paired with advanced low-temperature potting technology, grants the ring a 5ATM&IP68 water resistance rating. the R02 Smart Ring is not just feather-light but incredibly durable and resistant to wear. Its ruggedness is matched by monitoring accuracy, with 20 different exercise modes that monitor your heart rate data in real time during exercise.

Embrace the future of smart wearables with the COLMI R02 Smart Ring – a perfect blend of innovation, style, and health consciousness.

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