This ex-Bose engineer just launched smart earrings that actually look like jewelry

November 18, 2025 TH Author

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ZDNET’s key takeaways

Lumia Health launches the Lumia 2 smart earrings.
They track blood flow, exercise, sleep, and more.
The smart earrings were developed by an ex-Bose engineer.

Your jewelry box’s contents are getting smarter. First we had smartwatches, then we got smart rings, and, after today’s announcement of Lumia 2, we’re getting smart earrings — accessories that track blood flow, exercise, and sleep.

Ditches the med-techy look

The second-generation smart earrings launched on Tuesday.

Initially developed for those with long COVID or POTS looking to track blood flow, CEO and founder Daniel Lee is expanding his smart earrings through the second-gen product, built for a wider, general audience. The Lumia 2 ditches the med-techy look of its first generation for a stylish, light, and discreet health tracker disguised as an earring.

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Lee is a former Bose engineer who led the engineering of its famed sleepbuds, and he, in his own words, “knows how to put tiny things in people’s ears for a long time,” he told me in an exclusive interview. After Lee’s father broke several ribs when he fainted due to a lack of blood flow, he wondered how to create a device that measured that in the ear.

So Lee went to several medical institutions to study conditions like long COVID and POTS. What he saw was that women were more likely to come in reporting these conditions. “There’s a big cohort of younger women with POTS and long COVID that are really being hit by this hard, and they’re much more eager to go to the doctor,” Lee says. There, the idea for an unobtrusive, discreet wearable primarily designed for women with long COVID and POTS was born.

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In development, Lee learned that blood flow impacts all sorts of things, from energy and focus to mental clarity.

Depending on the temperature of a room, the way someone is sitting in a chair, or how much water they’re drinking, blood flow — and, with it, energy and focus — can fluctuate. By tracking blood flow throughout the day, people can optimize their focus at work or their energy levels off the clock. One of the prime places to measure blood flow in the body is, in fact, the ear.

Customize the front of the earring

The sensor is packed onto the back of the left earring and primarily tracks blood flow but also all the usual health wearables biomarkers, like heart rate and heart rate variability. That means you can customize the front of the earring with all sorts of fronts — not only the ones Lumia sells.

Lumia’s current earring lineup includes huggie hoops, cuffs, and ball studs offered in gold, silver, and clear finishes.

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Unlike a smart ring or smartwatch that’s constantly moving at the whims of a busy hand, Lee says it’s harder to move — and aggravate the data capture — of a smart earring. During our interview, Lee held up his two arms, which were covered in smart wearables like a Whoop band, a smartwatch, and a smart ring. “This,” he glances at his wrist, “is precious real estate.”

An earring, on the other hand, is less obtrusive. Plus, unlike smart rings, which people have to take off for weight training due to the risks of degloving, smart earrings can be worn continuously no matter the activity.

Availability

The Lumia 2 comes with a five to eight-day battery life and retails for $250, plus an additional $10 a month membership that currently guarantees Lumia 1 users new hardware upgrades, alongside the usual software updates and privacy protocols.

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Visit Lumia’s website to reserve a spot in line for the new product.