See more of your night.

Review your sleep duration and estimated sleep stages in App. Compare your records across nights to get a clearer picture of your sleep routine.

Explore what Ring 2 helps you follow.

Sleep, heart, SpO2, cycle reminders, and daily body trends in a ring designed to fit your routine.

COLMI Ring 2 smart ring worn for overnight sleep tracking

Sleep Comfortably Overnight

COLMI Ring 2 smart ring with cycle reminders and body trends in QRing app

Cycle & Body Trends

COLMI Ring 2 smart ring with heart rate HRV and SpO2 records in QRing app

Heart, HRV & SpO2

COLMI Ring 2 smart ring worn as everyday jewelry with no required subscription fee

Everyday Fit, No Subscription

Watch Ring 2 in real routines.

See how creators wear Ring 2, check their sleep records, and fit it into everyday life.

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COLMI Ring 2 Pro in Gold worn overnight in a quiet bedroom
COLMI Ring 2 Pro in Gold worn on an index finger during a morning at home

Made for nights. Styled for days.

A screen-free design and a 7 mm band, with finishes that fit into your everyday style. Wear it through your nightly routine, then pair it with your daytime look.

Find your Ring 2 style.

Explore Classic, Radiant, and Ceramic. Choose the collection that fits your everyday look.

COLMI Ring 2 smart ring in gold finish

Classic

A clean, understated look for everyday wear.

COLMI Ring 2 Frosted gold

Radiant

A more expressive look for your daily rotation.

COLMI Ring 2 smart ring in pink ceramic finish

Ceramic

Explore the ceramic collection and find your favorite finish.

The details, before you order.

Key specifications for health records, battery, design, connectivity, and compatibility.

Health
Sleep tracking
  • Sleep duration, sleep trends, and nightly rest patterns
Heart rate & HRV
  • Heart rate and heart rate variability trend tracking
Blood oxygen
  • SpO2 trend tracking for wellness reference
Stress & temperature
  • Stress and temperature trends for everyday wellness insights
Battery
Battery life
  • About 5 days with typical use
  • Up to 15 days standby
Charging time
  • About 1.5 hours
Charging method
  • Magnetic charging cable or magnetic charging dock, depending on selected variant
Design
Finish options
  • Stainless steel and ceramic finishes are available depending on selected variant
Weight
  • Around 3.5g depending on size and finish
Sizes
  • Size range varies by finish; check the selected variant before purchase
Colors
  • Stainless steel and ceramic finishes have different color options
Connectivity
Bluetooth
  • Bluetooth v5.2 low energy
App
  • QRing app
Compatibility
  • Android 5.1+ and iOS 9.0+
Activity & smart features
Daily activity
  • Steps, distance, and calories
  • Multi-sport mode for everyday movement records
Convenience features
  • Remote camera and find ring
  • Female cycle reminders
  • Gesture controls and ring mini games on supported Ring 2 variants

What’s included

  • COLMI smart ring icon

    COLMI Ring 2

  • COLMI smart ring charging case icon

    Charging case

  • Ring Cover

  • Charging cable

  • Quick Start Guide

Questions before you order.

Fit, app, water resistance, cycle reminders, and wellness-use answers for COLMI Ring 2.

Do I need a subscription?

No monthly subscription is required to access core Ring 2 records in the QRing app.

How do I choose my size?

Use the COLMI size guide before ordering and compare your measurements with the instructions. Online sizing is an estimate. Contact our team before purchase if you are unsure which size to choose.

How are Classic, Radiant, and Ceramic different?

The collections offer different exterior styles and finishes. Check the selected collection for available colors, sizes, and pricing.

Will it work with my phone?

Ring 2 connects with QRing on iPhone and Android. The current iPhone app requires iOS 13 or later. Check the latest requirements in your local app store before ordering.

When will my order arrive?

Shipping options and available delivery estimates are shown at checkout. Timing depends on your destination, product availability, and fulfillment arrangements.

Can I return it?

You can request a return within 30 days of delivery. Items must meet the return conditions, including being unworn or unused and in their original packaging. Sale-item exclusions apply. Please review the full policy before ordering.

Is a warranty included?

U.S. Ring 2 orders include a 1-year limited warranty from delivery for covered defects in the ring and included charging case. Accidental damage, incorrect size selection, and normal cosmetic wear are excluded. See the warranty terms for details.

What does COLMI Care+ add?

Care+ is optional. It provides one approved accidental replacement during the same 1-year period; it does not extend that period. For U.S. claims, return shipping is the customer’s responsibility when required. COLMI covers shipping of the approved replacement. Exclusions apply.

What people are saying

Lynn Lively
Lynn Lively

Absolutely in love. It tracks everything I need and still looks so trendy.

Mekayla Grice
Mekayla Grice

This ring is great, and I love that I don’t have to pay for the app.

Lexi
Lexi

I love checking my results every morning. The app is simple to use and makes the ring easy to stick with.

Brittany Lee
Brittany Lee

Super flattering and easy to wear. It tracks sleep, activity, steps, heart rate, body temperature, stress, and cycle reminders.

Nikki Herrera
Nikki Herrera

Works perfectly and feels like a much more expensive smart ring, but at a much better price.