Sandbar Raises $23 Million to Launch Stream, an AI Note-Taking Smart Ring

Sandbar, the wearable startup founded by former Meta employees Mina Fahmi and Kirak Hong, closed a $23 million Series A round led by Adjacent and Kindred Ventures, bringing its AI-powered Stream ring closer to a summer 2026 launch after more than two years of development.

The Stream ring is built for one specific task: capturing the thoughts you lose between having them and finding your phone. The device is not a health tracker in the vein of Oura. Instead, it sits in a category alongside note-taking wearables like Plaud and Omi, with a microphone that is off by default and activated only by pressing a flat, touch-sensitive panel on the ring's face. The mic is tuned for proximity, meaning users must lift their hand to their face to record, a deliberate friction that limits accidental capture. From the same panel, wearers can record voice notes, initiate AI assistant conversations through the companion phone app, and control media playback including play, pause, skip, and volume.

Fahmi, who previously worked at neural interface startup CTRL-Labs and augmented reality company Magic Leap before Meta, said the market response exceeded the team's expectations. "The response to the launch was a lot warmer than we expected, which is really encouraging and meaningful," she told TechCrunch. "A lot of people said they could see themselves wearing this."

That warmth translated into real demand. The first preorder batch sold out last year, prompting Sandbar to open a second. Some early users are interacting with the ring more than 50 times a day, reaching for it to sketch out presentation outlines, plan trips, or capture meal ideas before the thought disappears.

The company came out of stealth last year after an extended testing phase with friends and early adopters, and its 15-person team carries backgrounds from Amazon, Fitbit, Equinox, Google, and Apple. The Series A funding will go toward doubling the software and machine-learning teams and building out a marketing function as the company prepares for its first broad consumer launch.

The companion app currently requires the Stream ring to function, though Sandbar said it is considering opening access to users who do not own the hardware. The app can also operate independently if the ring is charging or misplaced. On the software roadmap: a web platform, improved mobile UI, and reduced AI response latency.

Some pricing and subscription details have circulated in early coverage, including figures of $249 for a matte silver model and $299 for a gold version, along with a reported $10-per-month Stream Pro subscription tier. Those specifics have not been confirmed by the company's primary reporting and should be treated as unverified until Sandbar publishes official pricing.

What is clear is that Sandbar is entering a market that has generated more hype than hardware. The bet Fahmi and Hong are making is that the most useful AI wearable is not the most ambitious one. A ring that reliably captures a thought when you raise your hand to your face, with a mic that stays silent the rest of the time, may be a more honest value proposition than the industry has managed so far.