Natura's $99 Interface smart ring lets users control AI agents by finger press or voice

Natura, an AI and hardware startup, has unveiled Interface, a $99 smart ring that lets users send requests to AI agents by pressing a finger or holding a press to speak, according to TechCrunch.

The ring also tracks heart rate, HRV, sleep, and activity, and at launch connects with agents including Meta's Muse, Instinct, Grok Bot, Claude, and ChatGPT.

Preorders are expected to open next month, with shipping slated for December or January, and Natura plans a $9 monthly subscription after an initial three- to six-month free period. A separate post by Elvis Saravia (@omarsar0) describes the ring as press-and-hold voice input to agents such as Claude Code, Codex, or Hermes, and argues that screenless interfaces may matter for agent use. That post's account of the input method differs from the TechCrunch report's description of finger-press task requests, and the two sources' details are not reconciled here.