Lumo Ring
Know your night.
Sleep, heart rate, blood oxygen and activity, in a ring you forget you are wearing. No screen. No subscription.
No subscription, ever
Up to 4 days on a charge
Charging case holds 13 more
5ATM water resistant
Ships from the US
30-day size exchange
Sleep
Wake up knowing.
Every night Lumo records light, deep and REM sleep, resting heart rate and blood oxygen, then gives you one score in the morning. Over a few weeks you see what actually helps you sleep, and what does not.
Activity
Built for the days you move.
Steps, calories, workouts and a skin temperature trend, tracked without a screen buzzing on your wrist. 5ATM and IP68 rated, so it stays on in the shower, the pool and the gym.
No subscription
Every reading, score and history is included. There is nothing to pay after checkout, this year or next.
Weeks between cables
Up to 4 days on a charge. The pocket case in the box holds 13 more, so the ring lives on your hand, not on a charger.
Sized right, or swapped free
US sizes 7 to 13. If the fit is off, we ship the next size within 30 days and cover the return.
In the box
Ring, case, cable. That is it.
A stainless steel ring in your size, a charging case with its own battery, and a USB-C cable. Pair it with the free app for iPhone or Android in under a minute.
Finishes
Black, silver or gold.
Brushed black for every day, silver that disappears next to a watch, and a warm gold that reads as jewellery first. Same sensors, same battery, same price.
Questions
Do I need a subscription?
No. Every reading, score and history is included with the ring. There is nothing to pay after checkout.
Which phones work with it?
iPhone with iOS 8 or later and Android 5.1 or later, over Bluetooth 5.2. The app is free.
How long does the battery last?
Up to 4 days on one charge. The charging case holds up to 13 more charges.
Can I shower or swim with it?
Yes. The ring is rated 5ATM and IP68. Shower, swim and sleep with it on.
When will it arrive?
Every order ships from our warehouse in the United States. Delivery takes 5 to 8 business days and shipping is free.
What if the size is wrong?
We exchange sizes for free within 30 days. See the size guide for how to measure.