The smart ring has spent the last few years measuring your sleep, heart rate and your readiness for the day. Natura thinks it should also take orders.
Interface is a new $99 ring from the AI-and-hardware start-up, and its big idea is a button. Press it with your thumb, speak, and the ring hands whatever you said to the AI agent of your choice: Meta’s Muse, Instinct, Claude, ChatGPT and more.
Why we care: every AI company wants to be the thing you talk to all day, and the fight over which gadget that happens through is suddenly very real.
What It Actually Does
Interface is designed to be worn “at the base of your index finger, with the button within reach of your thumb,” explains the official Natura website. Press, talk, release. Natura’s NatureOS software routes the request to whichever agent you have set up for that kind of job. “A small gesture brings your agent within reach.”

Answers come back through connected headphones, an iPhone Live Activity or the NatureOS app. The use cases Natura is pushing are deliberately domestic: track a workout, ask for the day’s schedule, reorder shampoo, turn off the TV and set an alarm, or record a meeting and send the notes to a colleague. The microphone, stays off unless you press the button, and a small indicator shows when it is recording.
“We want asking for help to be as simple as saying what you need. Booking a table, finding a document or changing a plan can mean opening several apps. We started Natura to make those tasks possible through a conversation, with the apps and agents you choose… Our goal is to make these interactions useful enough to become part of an ordinary day.”
The Health Bit
Underneath the AI is a fairly standard smart ring. It tracks heart rate, resting heart rate, heart rate variability, sleep stages, daily movement and step count, and skin temperature over time. Natura claims six to 12 days of battery depending on use, a 100-minute full recharge, and up to 13 hours of continuous recording; the charging case is expected to hold 10 full recharges.

Interface will cost $99, with a $9 monthly subscription kicking in after an initial free period of three to six months. Natura also plans to raise the price eventually, so $99 is the early-adopter number rather than the forever number.
The Catch
There are a few things to know before you join the waitlist. Preorders are expected to open in November, with shipping slated for December or January. The ring pairs with an iPhone or Mac, so Android users need to wait.

And then there is the question of whether you want a microphone on your hand at all. Natura says nothing records until you press the button and a light tells you when its on. The competition is already crowded: health-first rings from Oura, Ultrahuman and RingConn are on one side, AI-first rivals like Pebble and Vocci are on the other.
Still, $99 for a ring that tracks your sleep and lets you text your AI without touching your phone is a tempting offer, even if the subscription means it is not quite as cheap as it looks.
If you do buy one, you may want to accessorise it: so check out our guide to the best smart ring jackets and jewellery.
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