AI hardware startup Natura has unveiled its new Interface smart ring, priced at $99. The ring allows users to summon AI agents with a press of a finger to complete tasks, capture thoughts, and control devices. It also functions as a health tracker, monitoring metrics such as heart rate, HRV, sleep, and activity. The device will connect with various AI agents and apps, including Meta’s Muse, Instinct, Grokbot, Claude, and ChatGPT. Pre-orders are expected to open next month, with shipping scheduled for December or January. After an initial three- to six-month free period, Natura plans to charge a $9 monthly subscription fee. The ring boasts a battery life of 6 to 12 days on a full charge.