Sevyn8 Ring
Coming firstWorn on your finger. Working on your day.
A ring that learns what's normal for you and tells you, in plain words, what to do next.
One price for the ring and its companion app. No subscription at launch. Pricing will be announced before launch.
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Made to disappear on your hand.
A slim band with nothing to look at, so you can wear it day and night without thinking about it.
Swim days
Every session, read against your own normal.
On the trail
Long days out, and how well you bounce back.
Made for your whole day.
Night and day, it keeps learning. Every morning, it turns what it noticed into one next step.
Overnight
Sleep
Follows your pulse, temperature and stillness through the night, against your own normal.
Morning
Your next step
One plain sentence on what changed, and one thing to do about it today.
Day
Training and recovery
Knows when you've pushed hard and when you're ready to go again.
Sensors
What it reads
- 01
Pulse
An optical sensor on the inside of the band follows your pulse day and night.
- 02
Skin temperature
Overnight temperature, measured against your own normal.
- 03
Motion
Activity, rest and sleep timing, for context on everything else.
What it helps with
- Sleep
- Recovery
- Stress
- Activity
- Cycle-related patterns
- Energy through the day
Specs
- Sensors
- Optical pulse, skin temperature, motion
- Companion app
- iPhone and Android (in development)
Battery life, materials, weight and water resistance will be listed here once they're tested on production rings.
Sizing guide
- 1Pick the finger you want to wear it on. Most people choose the index or middle finger.
- 2Wrap a thin strip of paper around the base of that finger, snug but comfortable.
- 3Mark where it overlaps, lay it flat and measure the length in millimetres.
- 4Measure later in the day, when fingers are at their largest, and check twice.
The full size chart will be published with final ring sizes.
Pricing
One price. No subscription at launch.
One price covers the ring and its companion app together. The introductory price will be announced to the waitlist first.
Questions
Is the Sevyn8 Ring a medical device?
No. The Sevyn8 Ring is a general wellness product that helps you understand your sleep, recovery, stress and activity. Sevyn8 products are for general wellness. They are not medical devices and do not diagnose, treat, cure or prevent any disease or condition.
When can I get one?
The ring isn't on sale yet. Join the waitlist and you'll hear first when it is, along with the introductory price.
Will I need a subscription?
Not at launch. One price covers the ring and its companion app together.
Which phones will it work with?
We're building the companion app for iPhone and Android. We'll confirm supported versions before launch.
What happens to my data?
The system is designed so raw signal stays on your device by default, and you choose what's shared and with whom. We don't sell personal data and we don't use advertising pixels on this site.
Where will it ship?
We're starting in the United States, sold online only.
Early access
Be among the first to wear it.
Join the waitlist for early access and first word on the introductory price. We'll only email you when there's something worth saying.