1. Order Your Ring
Place your order by selecting the Free Sizing Kit option. We'll send you a sizing kit before your ring ships.

















Every metric that matters without the subscription.
4.8
Pick a color that fits your style.
Select a ring size before adding to cart.
We recommend your true ring size — our rings use standard US sizing. We recommend sizing up one size for Ceramic Rings. Not sure?
Smart ring sizes differ from standard rings and other smart ring brands. To find your correct size, please use our Free Sizing Kit by following the steps below:
Place your order by selecting the Free Sizing Kit option. We'll send you a sizing kit before your ring ships.
Your sizing kit will arrive in 3–8 days (varies by location).
Choose your preferred finger for sizing. For optimal comfort and accuracy, we recommend the index, middle, or ring finger.
Go to My Orders to sign in and submit your ring size after you try the kit.
Choose extended protection for your ring.
One free replacement if your ring is damaged during the warranty period.
Finding the right size is one of the most important parts of your Sona Ring experience.
Unlike traditional jewelry, Sona Ring contains advanced sensors that require a secure fit to provide accurate wellness tracking. Your ring should feel snug, but comfortable—tight enough that it won't rotate freely, but loose enough to remove without discomfort.
In most cases, no.
Sona Ring is manufactured using standard US ring sizes, so if you already know your US ring size, we recommend ordering your normal size.
However, because Sona Ring is wider than a traditional ring (approximately 7–8.5mm depending on the model), it may feel slightly tighter than a thin jewelry band.
If your normal ring already fits snugly, stick with your usual US size.
For the most accurate readings, we recommend wearing Sona Ring on your:
✅ Index Finger (Recommended)
You can also wear it on your:
Avoid wearing Sona Ring on your pinky finger whenever possible, as sensor accuracy may be reduced.
✔️ Choose the smaller size if:
✔️ Choose the larger size if:
Want to learn more about how our app works? We’ve created a full guide that walks you through all the features, setup steps, and tips to get the most out of your experience. From syncing your device to customizing your settings, you’ll find everything you need in one place.
Learn More
Processing time: 1 to 2 working days
Shipping time: 7 to 10 working days.
We offer a stress-free 30-day return policy to ensure your satisfaction. If you’re not completely happy with your purchase, you can return it within 30 days.
For more in depth shipping times, please click here
SHIPPING TIMES
Choose options

















Pick a color that fits your style.
Select a ring size before adding to cart.
We recommend your true ring size — our rings use standard US sizing. We recommend sizing up one size for Ceramic Rings. Not sure?
Smart ring sizes differ from standard rings and other smart ring brands. To find your correct size, please use our Free Sizing Kit by following the steps below:
Place your order by selecting the Free Sizing Kit option. We'll send you a sizing kit before your ring ships.
Your sizing kit will arrive in 3–8 days (varies by location).
Choose your preferred finger for sizing. For optimal comfort and accuracy, we recommend the index, middle, or ring finger.
Go to My Orders to sign in and submit your ring size after you try the kit.
Choose extended protection for your ring.
One free replacement if your ring is damaged during the warranty period.
What's included
Everything you need on day one — no upsells at checkout, no surprise "accessories."
Wear it. Sleep in it. Swim with it. If Sona doesn't change how you understand your body, send it back.
Questions
Yes — it’s designed for 24/7 comfort.
It’s lightweight, slim, and smooth enough to wear while sleeping, lifting, running, or working.
The Sona Ring uses built-in sensors to measure heart rate, sleep quality, recovery levels, calories burned, and daily activity. All data syncs automatically to the Sona app for real-time insights and personalized recommendations.
Sona lasts a full 7 days on a single charge.
Yes. Rated to 100 metres.
Never. The Sona app is free forever.
If your Sona Ring doesn't fit as expected, simply reach out to our support team. We'll be happy to assist you with a size swap and help you find the perfect fit.