Natura unveils $99 Interface smart ring with AI agents

Hardware startup Natura announced Interface, a $99 smart ring that controls AI agents like Claude, ChatGPT, Grokbot and Meta Muse by voice while tracking heart rate, HRV, sleep and activity. Pre-orders open next month, shipping is set for December or January, and a $9 monthly subscription follows a free 3- to 6-month period.

• Priced at $99, with a $9 monthly subscription after 3–6 free months
• Works with Claude, ChatGPT, Grokbot, Meta Muse and other agents
• Battery lasts 6–12 days, full recharge takes 100 minutes
• Tracks heart rate, HRV, sleep stages, steps and skin temperature