Natura, an AI and hardware startup, has unveiled Interface, a $99 smart ring that lets users summon AI agents with a simple press of a finger. The device, announced by founder Carlo Edoardo Ferraris, is positioned as a wearable interface for the growing ecosystem of AI agents while also functioning as a health tracker that monitors heart rate, heart rate variability, sleep stages, activity levels and skin temperature.
Ferraris previously founded Rolling Square, a company known for tech accessories such as HumanPods, AI‑enabled earbuds designed for agent interaction. After years of building consumer hardware, he concluded that rapid advances in AI demanded a new kind of interface that feels as natural as asking a person for help. “Over time, we evolved to an understanding where you really want to have access to your agents 24/7,” Ferraris told TechCrunch. “You don’t want to have even one hour of your day where you cannot access them. And the form factor of the ring is perfect for this because it’s basically an extension of you. You can go shower with it; you can sleep with it. You never take it off.”
At launch, Interface will connect to a range of AI agents and apps, including Meta’s Muse, Instinct, Grokbot, Claude and ChatGPT. Users can specify which agent should handle a particular request. For example, they could ask Claude to write code, Instinct to book a reservation and Grokbot to manage another task. Responses from the agents can be delivered through connected headphones, an iPhone Live Activity or Natura’s own NatureOS app.
The ring also serves as a health monitor. It tracks resting heart rate, heart rate variability, different sleep stages, daily movement, step count and skin temperature over time. Natura says the battery lasts between six and twelve days on a full charge, depending on usage, and recharges in about 100 minutes.
Practical use cases highlighted by the company include starting a workout tracker during a run, checking the day’s schedule upon waking, reordering shampoo while in the shower, turning off the TV and setting an alarm when falling asleep, and sending meeting notes to a coworker after a recording. Ferraris believes that, as personal AI agents become more common, the ring could eventually replace many screen‑based tasks such as filling out forms, messaging, finding files and drafting presentations. “Ultimately, the main interface between users and technology is going to be the ring,” he said. “So it’s not going to be immediate because even today, not everybody has a personal agent, but I think everybody is bound to have one. So in this first phase, we expect it’s going to be for the people that already have a personal agent, which is mostly people in tech. But eventually, I think within a year, more or less, most people will have a personal agent.”
Interface will be available for pre‑order next month, with shipping slated for December or January. The introductory price is $99, but Natura plans to raise the cost after an initial period aimed at driving adoption. After a free three‑ to six‑month trial, the company intends to charge a $9 monthly subscription fee. Ferrara notes that the ring’s manufacturing costs are similar to those of products like the Oura Ring and the Samsung Galaxy Ring, as they share many of the same components, but the lower launch price is meant to reduce the barrier to entry.
The smart ring market already includes health‑focused offerings from Oura, Ultrahuman and RingConn, as well as AI‑oriented rings from companies such as Pebble and Vocci. Ferrara argues that Interface stands out by combining high‑quality health tracking with the components needed for agent communication, meeting recordings and external memory, while also delivering a long battery life in a very small form factor. “This ring that we’re about to launch is significantly different compared to any other ring out there today because we were able to combine not only the highest quality health tracking with the rest of the components that allow for agent communication and meeting recordings and external memory, but we were also able to do that with an incredibly long battery life, which is vital for a product like this, and in a size that is very, very small. The product itself is, from a hardware perspective, very different from anything else that’s out there,” he said.
By merging AI agent access with continuous health monitoring, Natura aims to create a wearable that keeps users connected to their digital assistants without requiring them to reach for a phone. The company hopes the combination of utility, affordability and wearability will encourage broader adoption as personal AI agents become a regular part of daily life.
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