COLMI Ring 2 Pro
Know your nights. Forget the extra hassle.
A lightweight titanium-alloy ring with upgraded sensing for more consistent tracking. Explore your sleep insights in the app and recharge on the go—with the charging case included.
Choose the size that feels secure without pressure, especially for overnight wear.
Optional accidental protection
No monthly subscription required for core features.
Lightweight comfort, day and night.
Upgraded sensing for more consistent tracking.
Recharge on the go with the included case.
COLMI Ring 2 Pro
Three upgrades. A more effortless everyday.
Comfort you can sleep in.
A lightweight titanium-alloy design that feels easy on your finger—from lights out to your morning coffee. Made to fit into your routine, not get in the way.
More consistent tracking.
Upgraded dual-PD sensing supports a steadier optical signal, helping you follow your everyday trends with more confidence.
Power that travels with you.
Recharge your ring from the included case—at your bedside, in your bag, or on a weekend away. No outlet needed for each ring recharge.
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 Pro helps you follow.
Sleep, heart, SpO2, cycle reminders, and daily body trends in a ring designed to fit your routine.
Sleep Comfortably Overnight
Sleep is one of the clearest reasons to choose a smart ring over a smartwatch. COLMI Ring 2 Pro is screen-free and lightweight, making it easier to keep on through the night while it records your sleep routine in the APP.
Review sleep duration, sleep-stage records, overnight heart rate, and related wellness trends to better understand how your nights change over time.
Key Benefits
- Sleep duration and sleep-stage records
See how long you slept and how your night was recorded across different sleep stages. - Overnight heart rate and HRV insights
Review heart rate and HRV trends as part of your general wellness routine. - Comfortable for bedtime
A slim ring format makes it easier to keep tracking while you sleep, without a bright wrist screen.
Cycle & Body Trends
Your body can feel different across the month. COLMI Ring 2 Pro helps you follow cycle reminders alongside sleep, heart rate, HRV, SpO2, and activity records, giving you a simple way to notice lifestyle patterns in the APP.
Use these records to plan rest, movement, and daily routines with more awareness of your own rhythm.
Key Benefits
- Cycle reminder support
Use QRing reminders to keep track of your cycle timing and related routine changes. - Body trend awareness
Compare sleep, heart rate, HRV, SpO2, and activity records over time to notice changes in your daily rhythm. - Smarter self-care routines
Adjust rest, activity, and wellness habits based on how your body feels each day.
Cycle features are for lifestyle reference and personal reminders only. They are not intended for medical diagnosis, contraception, fertility prediction, or treatment.
Heart, HRV & SpO2
Wellness is easier to understand when you can see patterns over time. COLMI Ring 2 Pro records heart rate, HRV, and SpO2 data through the APP, giving you a simple way to follow your body trends.
Instead of focusing on one number, use your records to notice how sleep, activity, stress, and routine changes may relate to the way you feel.
Key Benefits
- Heart rate records
Follow daily heart rate data as part of your wellness history. - HRV insights
Review HRV trends that may help you understand changes in rest, stress, and daily routine. - SpO2 records
View blood oxygen records for general wellness reference.
Everyday Fit, No Subscription
COLMI Ring 2 Pro gives you the core smart ring experience without pushing you into a high-price device or a required monthly subscription. It is built for women who want useful wellness records, simple app access, and a ring they can actually wear every day.
The clean ring shape works with daily outfits, while about 5 days of battery life supports ordinary routines between charges.
Key Benefits
- Looks like a real ring
A slim, jewelry-like shape makes it easier to wear with your normal style. - No required subscription fee
Access core QRing records without a required monthly membership. - Approachable smart ring value
A practical entry point for sleep, heart, SpO2, activity, cycle reminders, and body trend records.
More living. Less plugging in.
From busy weeks to weekends away, keep your ring powered without constantly hunting for a cable. When it needs a top-up, place it in the included charging case—then get back to your day.
Made for nights. Styled for days.
COLMI Ring 2 Pro is designed for screen-free tracking through sleep, work, and daily routines. The slim ring format is easier to keep on overnight than a bulky wrist device, while still fitting naturally with your everyday jewelry.
Product details
Key specifications for health records, battery, design, connectivity, and compatibility.
Health
Battery
Design
Connectivity
Activity & smart features
Included in the Box
COLMI Ring 2 Pro
Charging case
Ring Cover
Charging cable
Quick Start Guide
Questions before you choose.
What is different about Ring 2 Pro?
Ring 2 Pro combines a titanium-alloy exterior, dual-PD optical sensing and an included 500 mAh charging case. Ring 2 offers core sleep and daily wellness tracking with more exterior style options at a lower starting price.
How do I choose between Ring 2 and Ring 2 Pro?
Choose Ring 2 if you want our core sleep, activity and body-trend features at a lower price. Choose Ring 2 Pro for a lighter, more comfortable titanium-alloy ring, better scratch resistance than Ring 2's stainless-steel models, more accurate and consistent optical tracking, and a larger-capacity charging case that lasts longer between case recharges. Neither model requires a monthly fee for core tracking features.
Do I need a subscription?
No monthly subscription is required for core tracking features.
How do I find my size?
Use the COLMI Sizing Guide or Ring Sizer to find a secure fit without uncomfortable pressure. If you are unsure, ask our team.
How long does the battery last?
The ring offers about 5 days of typical use per charge. The included 500mAh case lets you recharge your ring at home or on the go. Actual ring and case battery life varies with use and settings.
Does it measure skin temperature?
Yes. Ring 2 Pro measures skin-surface temperature and lets you follow temperature trends in the companion app. It is intended for everyday wellness reference, not fever or medical diagnosis.
Can I wear it in water?
Ring 2 Pro is designed for everyday water exposure. Avoid hot water, saunas, chemicals and deep-water use. Dry the ring before charging.
What about warranty and returns?
Ring 2 Pro comes with a one-year limited warranty. Eligible unworn products may be returned within 30 days, subject to our return policy. Review the current terms for eligibility and claim steps.