KAIRO Sync Smart Ring
$45.00
$75.00
SAVE 40%
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Syncs seamlessly with your phone
Tracks heart rate 24/7
Long-lasting battery
Water-resistant
Limited stock:
Only a few left!
30-Day Money-Back Guarantee
90 Day Returns
See it in action
Raquelle
The menstrual cycle tracking is super accurate and has really helped me understand my body way better. It’s comfortable to wear all day, and having all my health info in one place makes life so much easier
KAIRO Sync Smart Ring
Get It By
Wednesday, September 17
Get It By
Wednesday, September 17
Customer Reviews
Jenna,
Verified Buyer
I never realized how poor my sleep really was until I got this ring. The Kairo helped me see how little deep sleep I was getting. I started adjusting my bedtime and now I’m waking up feeling so much better. I didn’t expect a ring to help this much.
KAIRO Sync Smart Ring
$45.00 $75.00
Purchased on March 14th, 2025
Leah,
Verified Buyer
I work in a corporate setting and smartwatches felt too obvious. Kairo is discreet and stylish and still gives me all the data I want, especially during stressful meetings. It’s exactly what I needed
KAIRO Sync Smart Ring
$45.00 $75.00
Purchased on March 14th, 2025
Maya,
Verified Buyer
I’ve tried everything, apps, fitness bands, journals nothing stuck. But with KairoI don’t have to do anything but wear it. It automatically syncs to the app and gives me insights I can actually understand
KAIRO Sync Smart Ring
$45.00 $75.00
Purchased on March 14th, 2025
Margaret,
30
Verified Buyer
At my age, it’s easy to lose track of how your body’s really doing. This little ring gives me peace of mind. It quietly keeps an eye on my heart rate, sleep, and even reminds me to stay active. I don’t need to fiddle with anything
KAIRO Sync Smart Ring
$45.00 $75.00
Purchased on July 9th, 2025
How It Works
The Kairo Sync continuously collects data throughout your day and syncs it wirelessly to the Kairo app, giving you real-time insights and personalized health updates right at your fingertips.
Unboxing and Setup
You take the smart ring out of the box, charge it if needed, and connect it to your smartphone or device through the designated app in the user manual to get started.
Data Collection
The Kairo Sync smart ring continuously collects data from your body using its built-in sensors, including advanced tracking for heart rate, sleep patterns, and menstrual cycle.
Data Sync and Insights
Kairo syncs the data to your device, where you can track your health, activity, or other features through the designated app. With just a quick glance, you can review your stats, spot trends, and stay effortlessly connected to your wellbeing.
Numbers Don’t Lie: The Health Wake-Up Call
Discover the real numbers driving the need for smarter health tracking. From sleep to heart rate, Kairo helps you stay ahead of the curve—because your body is always talking. We're here to help you listen.
75%
of adults report poor sleep quality
real-time sleep tracking helps users understand and improve rest patterns.
24%
of deaths globally are due to heart disease
continuous heart rate monitoring can help detect early warning signs.
68%
of women experience irregular menstrual cycles
cycle tracking can help identify patterns and irregularities early.
75%
don’t meet daily activity goals
Kairo sync can track steps, movement, and recovery to promote healthier habits.
Kairo Sync Smart Ring
Know your body. Own your rhythm. Track your heart rate, sleep, menstrual cycle, and activity—all from your finger. Designed for comfort, built for insight.
Menstrual Cycle Tracking
Get accurate predictions and insights tailored to your unique cycle.
Seamless Syncing
Connect effortlessly to the app for real-time health data at your fingertips.
Sleep & Recovery Analysis
Monitor sleep stages and recovery so you can wake up feeling refreshed.
Long-Lasting Battery
Enjoy days of usage on a single charge with fast recharge times.
Loved By 5,000+
Frequently Asked Questions
Find answers to common questions about our products, shipping, returns, and more.
How long does the battery last?
+
The ring typically lasts up to 5 days on a single charge and fully recharges within 1-2 hours.
Can the ring track my menstrual cycle?
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Yes, it provides cycle tracking and predictions tailored to your unique patterns.
How long does shipping take?
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Estimated delivery time: 7–21 business days, depending on your location.
Express shipping options are available at checkout for an additional cost.
What is your return policy?
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We offer a 30-day return policy. If you're not satisfied with your purchase, you can return it within 30 days for a full refund or exchange.
Money-Back Guarantee
We're so confident in the quality of our product that we offer a satisfaction guarantee. If you're not completely satisfied with your purchase, simply return the item within 30 days for a full refund.
CLAIM NOW
100% Satisfaction
Fast Shipping
Easy Returns
Money-Back Guarantee
We're so confident in the quality of our product that we offer a satisfaction guarantee. If you're not completely satisfied with your purchase, simply return the item within 30 days for a full refund.
CLAIM NOW
100% Satisfaction
Fast Shipping
Easy Returns