Generic

COLMI R02 Sports Tracking Smart Ring Multiple Sports Modes Record time Steps Calories Suitable for Men and Women

4.0(47)

275+ bought in the past month

$39.98
sizeS

About this item

  • [Purchase a Sizing Kit] Before purchasing the COLMI Smart Ring R02, we recommend that you purchase the COLMI Sizing Kit to help you choose the right ring size.
  • [Health measurement] Supports 24-hour heart rate monitoring, can measure blood oxygen, sleep, etc., record health data, and generate health analysis reports.
  • [Charging compartment] Equipped with a charging compartment, light and compact, can be carried with you, charge anytime, anywhere, making travel more convenient.
  • [Sports mode] Supports running and other sports modes, records exercise time, steps, calories, etc., to understand your exercise status.
  • [Control photo] After connecting to the mobile phone, it supports controlling the mobile phone to take pictures, and you can easily wave your fingers to leave beautiful moments.
  • [Best After-Sales] Thank you for your trust, we will provide professional after-sales service. If you have any use or quality problems, please feel free to contact us. Accessory list: 1 smart ring, 1 portable charging box, 1 charging cable, 1 instruction manual.
$39.98

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Product details

Operating SystemAndroid, IOS
Memory Storage Capacity1 MB
Special FeatureExercise data, Heart rate measurement, Sleep measurements, Sport mode
Battery Capacity15 Milliamp Hours
Connectivity TechnologyBluetooth
Wireless Communication StandardBluetooth
Battery Cell CompositionLithium Polymer
GPSNo GPS
ShapeRound
BrandGeneric

Technical specifications

package_dimensions4.53 x 3.11 x 1.3 inches
item_weight3.2 ounces
item_model_numberCOLMI R02
batteries1 Nonstandard Battery batteries required. (included)
best_sellers_rank#62,078 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #250 in Activity & Fitness Trackers #441 in Electronics & Gadgets
date_first_availableJune 13, 2025
manufacturerShenzhen COLMl Technology Co., Ltd
memory_storage_capacity1 MB

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Customer reviews

4.047 ratings

Customers say

Customers find the smart ring to be a great fitness tracker that accurately monitors sleep cycles and steps, with an easy-to-use app and true-to-size fit.

★★★★★

I love this ring!!

Cassie—September 2, 2025

I love the COLMi ring! I ordered my true size (8) for my index finger in rose gold and love it. Accurate with step count, tracks sleep, activity, HR, HRV, blood oxygen, stress, and menstrual period! So dang cool. No monthly app fee either. The ring is super comfortable and fits well. The color is really pretty too. No need to spend hundreds when you can get this for a fraction! Read more

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★★★★★

Great product

Abraham Vindel—January 7, 2026

Awesome ring. It has different tracking functions like Sleep so you can see how well you are resting. You can check your Oxigen level or heart rate. It is waterproof, so if you like to swim it can track your daily goals. What I also like is that it has different gesture control. Battery is great, i got mine yesterday and it still has 96%. Light weight and true size. Read more

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★☆☆☆☆

Stopped working after 2 months

Ashley—December 11, 2025

Really liked the ring and the app a lot but it stopped charging and pairing with the phone app after 2 months of use. Return window is only 1 month. Probably better to go with something that will last longer. Read more

★★★★★

Get it!

Jennifer—January 10, 2026

Love it! It’s great so far and easy to set up! Some reviews mention that it runs out of charge fast on the first charge and this is correct! But after charging again I’m getting a 3-4 day charge! Just set the readings to every 30 minutes instead of every 5 and you’ll be good to go! The rose gold is pretty and more of a gold tone. Matches “yellow gold” stacking rings perfectly! Size 9 is a true size 9. I’ll do another review in a few months! Read more

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★★★★★

Great product!

Nicole Pettit—January 15, 2026

I absolutely love this ring especially with going through postpartum it has helped me so much! It keeps charge for 2 days and the app is easy to navigate and plus it’s free! The ring sizes are definitely true to size! I would definitely purchase this again if needed. I will be recommending this to all family and friends! Read more

★★★☆☆

Charge the ring every 3 to 4 days

Damani—September 17, 2025

There is a sensor on the ring that will only work best if it’s on the palm side of your finger Read more

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★★★★★

Great QRing for the money!

Patricia Kelly—January 3, 2026

I bought this q ring for me and one as a gift! For the money you can’t beat it! Tracks my sleep, heart rate and stress level. Free app to use as well. I could buy 5 of these for the price of the others. Read more

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★★★★★

Best Smart Ring

Gigliola penna—September 4, 2025

Super nice ring. It is very accurate. I tested it with my Apple Watch and they were both almost the same on everything. I got it yesterday and used it all day yesterday and today and the battery life is at 86%. It works great and the ring is true to size. It is 100% worth it for the money especially because there are other rings that do the exact same that are over $300. I also love that it comes with a case for the ring that you can put on for when you do your workouts so it doesn’t get scratched or anything. Such a great ring! Read more

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