Sandbar, maker of the AI wearable voice ring Stream, has raised $36 million to date, including a $23 million Series A round led by Adjacent and Kindred Ventures.
The startup is betting that voice-controlled wearables can succeed by keeping humans in control of the device, rather than automating decisions—a lesson Fahmi draws from earlier voice hardware that failed to break through as AI notetaking devices like transcribing earbuds and pendant pins have taken off over the past couple of years.
What happened
Sandbar, maker of the private voice ring Stream, raised $36 million total to date, including a $23 million Series A led by Adjacent and Kindred Ventures.
Why it matters
The company is entering a growing market of AI wearables—rings, pendants, and transcribing earbuds—designed to capture notes and ideas without fumbling with phones or keyboards. Sandbar's co-founder and CEO Mina Fahmi argues that keeping users in control, rather than automating decision-making, is key to getting wearable tech adoption right after earlier voice hardware devices struggled to gain traction.
What to watch
Stream is a private voice ring designed for capturing stray thoughts and ideas, part of a wave of wearables betting people want hands-free note capture throughout their day.
Sandbar, a startup founded by CEO Mina Fahmi, has secured $36 million in total funding, with its latest $23 million Series A round led by venture firms Adjacent and Kindred Ventures. The company builds Stream, a private voice ring designed to let users capture stray thoughts and ideas throughout the day without reaching for a phone or keyboard.
The move places Sandbar in a competitive wave of AI-powered wearables aimed at note-capture. Over the past couple of years, a variety of form factors have emerged—including credit-card-sized devices, pendants, pins, and transcribing earbuds—all promising to convert meetings and conversations into summaries and action items. Rings are now joining that landscape, with companies betting that the form factor's continuous presence on the user's hand will drive adoption of voice-controlled capture.
On an episode of TechCrunch's Equity podcast, Fahmi spoke with host Rebecca Bellan about why he believes earlier voice hardware devices struggled to break through and what Stream does differently. According to Fahmi's reasoning, keeping the human firmly in control is critical to getting wearable technology adoption right. Rather than automating decisions about what to capture or how to act on captured data, the approach places agency squarely with the user, a design principle Fahmi views as key to overcoming trust and usability barriers that hindered previous voice-hardware attempts.
The AI hardware market for note-capture has expanded significantly in recent years, with a range of wearables—from credit-card-sized devices to pendants, pins, and transcribing earbuds—all competing to turn meetings and moments into summaries and action items. Rings now represent the latest frontier in this space, with multiple companies betting that a form factor worn continuously on the hand can drive adoption of voice-controlled AI capture.
Sandbar's $23 million Series A reflects investor confidence in the voice-wearable segment. The company's strategic angle—emphasizing user control rather than full automation—appears to be a response to an earlier generation of voice hardware that failed to achieve mainstream adoption. Fahmi's reasoning suggests that design philosophy matters as much as technology: devices that let users decide what gets captured and acted upon may better address privacy and trust concerns that plagued previous voice-controlled hardware.
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