COLMI R02 Smart Ring, a Smart Ring for Women and Men, with a Charging case, Supports Heart Rate, Blood Oxygen, Sleep Health Monitoring, and Sports Tracking Ring. (Black, 7#)

9 reviews for COLMI R02 Smart Ring, a Smart Ring for Women and Men, with a Charging case, Supports Heart Rate, Blood Oxygen, Sleep Health Monitoring, and Sports Tracking Ring. (Black, 7#)

1. 

   Angelique Bowser – January 22, 2026

   Love this ring!
   I’m honestly impressed with the Colmi Smart Ring R02. It’s lightweight, comfortable, and looks like a normal ring—not a piece of tech. I wear it all day and night without even noticing it.The health and sleep tracking work great, the app is easy to use, and the battery lasts several days, which is a huge plus. Charging is quick and painless.For the price, this ring is an absolute steal. If you want health tracking without wearing a bulky smartwatch, this is totally worth it. Highly recommend!

2. 

   Mamá x partida Triple! – January 22, 2026

   Best product ever!
   I’ve been wearing this smart ring for a few days now, and I honestly didn’t expect to like it this much.It’s very lightweight, comfortable, and it doesn’t feel like a tech device at all, it actually looks like a fancy ring.What I like the most is how simple it is. It tracks my sleep, heart rate, daily activity, and stress levels without me having to check a screen all the time. I just wear it and forget about it.The battery lasts several days, which is a huge plus, and it’s perfect if you don’t like wearing a smartwatch 24/7. I also love that it goes with everything; casual or dressed up.If you’re into wellness but prefer something discreet and minimal, this is a really good option.Size 7

3. 

   Arelys – January 22, 2026

   Great Smart Ring for the Price
   I’ve been using the COLMI R02 Smart Ring for a few days now and I’m genuinely impressed, especially considering its price point. It’s lightweight, comfortable, and tracks my heart rate, sleep, and steps surprisingly accurately. The battery lasts several days on a single charge, and I love that it’s waterproof so I don’t have to take it off all the time. If you want a stylish and affordable way to track your fitness, this is a great buy!

4. 

   Oxzonna Lewis – January 22, 2026

   Smart, Stylish, and Subscription-Free—Just Watch Out for Metal Allergies!
   I’ve been wearing the COLMI R02 Smart Ring for a bit now, and honestly, it does everything it’s supposed to. Heart rate? Check. Blood oxygen? Check. Sleep tracking? Check. Sports tracking? Yep. And it all comes in this really pretty rose gold design that actually looks like jewelry, which is a huge win for me.Full honesty moment: if you’re sensitive to fake jewelry, this might not be your jam—I learned that the hard way. Totally my fault for not thinking it through! But besides that, everything else is perfect. I also love that there’s no subscription needed, unlike other smart rings, so you get all the features right out of the box.All in all, it’s stylish, functional, and really easy to use. Just make sure your fingers can handle the bling!

5. 

   Alex and V – January 22, 2026

   There must be a better device.
   I wanted to like this ring. I bought the size that would fit over my right hand knuckle(right hand dominant) so that was a good fit. The fully charged battery lasted maybe 36 hours. That didn’t bother me. BUT reading my pulse at 99 while sitting reasonable still for an hour caused me to check my pulse elsewhere. It was 70 bpm by taking pulse and using my phone app.It did best at sleep tracking but I was paying more attention to the data while awake so that accuracy wasn’t what I needed most. I know what time I go to bed and when I waken. I had no issues connecting to the phone .I’ll keep trying.

6. 

   Dani Dawson – January 22, 2026

   Great
   This is a great ring , perfect for tracking your bpm while being quite affordable. It was comfortable to wear and looks nice too. I love how its can track your steps and monitor your sleep as well.

7. 

   in h. – January 22, 2026

   Be aware and it is not worth it!
   It is not accurate when my husband was awake for hours it read it as he slept 9 hrs.(not accurate !)Second issue which is major issue one day after my husband installed app his phone totally froze and locked for no reason he was so furious coz it has all financial info might have been hacked. Just be aware guys!

8. 

   Carlos – January 22, 2026

   Good ring
   Great alternative to the expensive competitors. It tells me the information I wanted to know for a fraction of the price, fits well and battery is efficient. Would recommend.

9. 

   Amazon Customer – January 22, 2026

   The sizing was wrong and it takes forever to get to you even with prime and takes forever to get your refund